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THE SINGARENI COLLIERIES COMPANY LIMITED KOTHAGUDEM

INFORMATION FOR

ON

At

Shanthikhani Longwall Project

KTK-1 Incline

KTK-5 Incline

KTK-6 Incline

RK-NT Mine

RK-7 Incline.

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INDEX

S.No Description Page No.

1. Preamble 3

2. Need for Longwall/ Shortwall 3

3. Present Proposal 4

4. Course of action 4

5. Time schedule 5

6 Scope of work of SCCL 5

7 Scope of work of Bidder 5

8 Qualification criteria 5

9 Other terms 6

10 Conclusions 6

11 Contact Address 6

12 Details of Longwall mining proposal at Shanthikhani 7-13

13 Details of Shortwall mining proposal at RK-NT & RK-7

Mines at Srirampur area.

14-17

14 Details of Shortwall mining proposal at KTK-1,5 &6

Inclines at Bhupalapalli area

18-22

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Longwall (LW) in Shantikhani Mine & Shortwall (SW) Mining in the identified Mines of Bhupalapalli and Srirampur areas of SCCLtd. India - under Risk/Gain sharing concept

1. Preamble: Singareni Collieries Company Limited is the oldest Public sector company of India with 125 years of history. With its strategic location, the sole producer of coal in southern India, Singareni has always had an edge over other coal companies. The production of Singareni in 2012-13 is 53.19 MT, which accounts for about 10% of national coal production. The national demand of coal for the year 2014-15 is about 700 MT. The projected demand of coal for the same period from Singareni is about 63.70 MT. Further, with increased population and for sustainable energy growth, the country would have to enhance its power generation considerably from the existing level and the demand for coal will be doubled in near future. With this, the demand for coal requirement from Singareni would always be much more than its present projected levels.

At present majority of coal production from Singareni is coming from opencast mines than underground mines and this trend will be reversed in future since the majority of existing opencast mines will be closed due to depletion of shallow depth reserves in near future. Most of the underground mines of SCCL in XII plan and beyond are to be operated in the depth range between 400 meters and 600 meters. The underground production got stagnant at 11MTPA since 2009-10 and the opencast production increased from 38MTPA in 2009-10 to 42MTPA in 2012-13. Further due to growing environment concerns globally, it is imperative to go for highly mechanised and productive underground mines in future as a policy.

2. The need for Longwall/Shortwall: SCCL is well known for its technology absorption capacity and it has been a forerunner in the Indian coal mining scenario to introduce Longwalls, BG technology and continuous miner technology in many of its underground mines. All these technologies are planned up to a depth of 350mts and working satisfactorily, Further, the production from these technologies is limited to 0.3 MTPA to 0.6 MTPA. The support capacities for earlier Longwalls were ranging from 4x360T to 4x800T.

The future underground mines of SCCL are being planned beyond 350m depth range. The technologies like Blasting Gallery and Continuous miner would not be a favourable choice at these depths due to various problems like ventilation, strata control etc. Further each underground mine is to be planned for a production of greater than 3 MTPA in future to become economically viable. If the above technologies were to produce 3 MTPA, the number of units to be operated becomes more and results in low productivity due to increased manpower requirement.

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It also poses supervision and safety problems. The tangible and viable solution lies in introduction of high capacity Longwalls with 2X1200T PRS to produce more than 3 MTPA.

SCCL in its endeavour in adopting high capacity Longwalls in its underground mines for better safety and productivity has introduced one such Longwall in Adriyala shaft project of Ramagundam area and another Longwall is to be introduced in Kakatiya Longwall project of Bhupalapalli area under TPO concept. Both these Longwalls are to produce around 3.00 MTPA each. Longwall in Adriyala is entirely owned and operated by SCCL and it is expected to start its production in May 2014.

Underground mines that were developed and having standing pillars, which could not be day lighted are not viable with the present semi mechanization. There is an urgent need to bring down the cost of production in these mines by introduction of mass production technologies for increasing production from the present level of 0.2 to 0.3 MTPA to 0.6 to 1.00 MTPA. The liquidation of developed pillars is being done in RK NT underground mine of Srirampur area with Shortwall technology having a face length of around 90 to 100 m. As this technology proved to be successful in liquidating standing pillars in the existing underground mine and SCCL is now planning to introduce Shortwall technology in its underground mines of Bhupalapalli and Srirampur areas.

3. The Present Proposal: In light of the above, SCCL is planning to introduce Longwall/Shortwall technology through TPO / MDO in the following underground mines of SCCL.

A. Shanthikhani Longwall Project.

B. Shortwall Technology in Bhoopalapalli and Srirampur areas.

The above mines are identified for introduction of large scale mechanization. The exploration of these blocks was done by SCCL in association with Scientific and National Geological agencies. The technical details of the blocks are presented in Annexure-I to Annexure-VI.

4. The course of action: The general course of action proposed for achieving the above mentioned objective is

Stage-I:

a. Paper notification of the proposed vendor meet in reputed English dailies and uploading the back-ground information in SCCL web site. Further, circulation of back ground information to prospective bidders through e-mail for their reference for interaction during vendor meet.

b. Interaction with prospective bidders in the vendor meet scheduled after one month of circulation of background information. It is expected that the prospective bidders would come up with their requirements - technical, financial and otherwise, that they wish to be included in the NIT.

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Stage-II:

Basing on the vendor meet, SCCL will formulate a NIT. As per the procedure in vogue identify suitable bidder for each mine on techno-commercial aspects and issue Work Order to the successful bidder.

5. Time schedule: The likely schedule for the above activities is as follows;

Sl.No Node Mar’14 Apr’14 May’14 June’14 July ‘14

1 Preparation of background information for vendor meet

2 Paper notification, uploading in SCCL web site and circulation through e-mail of back ground information

3 Time for study by bidders

4 Vendor’s meet

5 Preparation of NIT

6 Obtaining approval and floating NIT

6. Scope of work of SCCL i. SCCL will obtain all the clearances required from the Government for starting

of the project. ii. SCCL would provide power, water and other infrastructure like approach

roads and buildings. iii. Establishments of surface arrangements for the high production Longwalls/

Shortwalls will be made by SCCL in consultation with the bidder from the bunker and out bye.

7. Scope of work of Bidder i. Drivage of trunk roadways & gate roadways for making panels, extraction,

roof caving management, strata control and instrumentation and transportation of coal up to surface bunkers will be within the scope of bidder.

ii. The bidder shall have a tie up with reputed scientific agency for addressing the strata control issues acceptable to SCCL.

8. Qualification criteria i. A minimum of 3 years experience in underground coal mining. The bidder

should have successfully produced at least one million tonnes of coal from a single mine in any one of the three preceding Financial years (FY 11, 12 & 13), by Longwall Mining technology or Mechanized bord and pillar method of mining Or

Should have supplied not less than three Mechanized Longwall packages (which shall at least include PRS) to a coal mine (s)/company (s) during the last three Financial years (FY 11, 12 & 13) with at least one such Mechanized Longwall package supplied during the Financial year 2013 and at least one such LW packages should have produced at least 1.00 million tonnes of coal in any one of the three preceding Financial years (FY 11, 12 &13).

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ii. The Bidder shall have to fulfil the Net worth requirement of more than INR 500 Crores (INR Five Hundred Crores only) as on the date of last audited financial statement.

iii. The Bidder shall have to fulfil an average annual turnover requirement of at least INR 500 Crores (INR Two Hundred Crores Only) for the last 3 Financial years (FY 11, 12 & 13).

9. Other Terms i. The terms of payment for operation and maintenance would be based on cost

per tonne, preferably in Indian currency. ii. There would be penalties for drop in production and bonuses for achieving

production in variation to the threshold production. If the production is sub-normal even beyond penalty regime, bank guarantee would be invoked.

iii. Likely technologies for each mine is presented in the technical annexure enclosed, however the bidder is free to provide equipment needed for working in conjunction with Longwall equipment. The expected production from Longwall face per year is 2.0 to 2.5 MT or higher and 0.5 to 1.00 MT in case of Shortwall Mining.

iv. The bidder shall associate for a minimum period of 6 years or till the completion of life of equipment. The bidder is free to suggest any period longer. Assistance in operations and complete maintenance will be done by the successful bidder

10. Conclusions

SCCL is looking forward for positive and effective technically & financially sound companies as TPO / MDO for working its mechanized mines.

Background information can be downloaded from SCCL web site www.scclmines.com. The prospective bidders can contact at the address given below for any additional information required.

11. Contact Address:

Chief General Manager (CP&P), Corporate office, Singareni Collieries Company Ltd., Kothagudem (P.O) Khammam(Dist.) Andhra Pradesh, India – 507 101 (PIN) Email: cppsccl@rediffmail.com

cppsccl@scclmines.com gm_pp@scclmines.com

Website: www.scclmines.com

Fax No. 08744 244115

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A. LONGWALL MINING PROPOSAL- SHANTHI KHANI LW PROJECT (MANDAMARRI AREA)

ANNEXURE-I 1. General Geology of Dorli-Bellampalli coal belt : :Dorli-Bellampalli coalbelt of about 80 km. In strike

length forms an integral part of the Godavari Valley Coalfield on its western margin. The development of coal seams and the general trend of the Gondwana sediments are in broad conformity with the regional setup of the Godavari Valley Coalfield.

Seams present : IA, I, II, LB1, IIIB, IIIA, Salarjung (Top and Bot sections) and Ross.

2. Geology and structure of Shanthikhani Longwall Block:

Geology : Shanthikhani Longwall block is located in the south eastern part of the Dorli-Bellampalli coalbelt. The area is mostly covered by sandy soil. The stratigraphic succession established in this block is mainly based on the interpretation of sub surface data.

Seams present : Eight co-relatable coal seams are present in the block viz., IA, I, II, LB1, IIIB, IIIA, Salarjung (Top & Bot Sections) and Ross seams.

Seams assessed : IA,I,II,LB1,IIIB,IIIA, Salarjung (Top & Bot. Sections) Ross seams.

Structure : The trend of the beds / coal seams established from the sub-surface data shows that NW-SE with North easterly dips of 110 – 160. The gradient of coal seams varying from 1 in 3.5 to 1 in 5.

Faults: A total of 15 faults with throw varying from 0-30 mt have been deciphered from subsurface data.

Description of Coal seams : The seam wise particulars such as depth range, thickness range, parting thickness range and quality are furnished in the following table.

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Summary of seam-wise details:

IA I II LB1 IIIB IIIA SJ(TOP) SJ(BOT) ROSS157 166 167 149 129 144 162 162 115

Depth range (m) Min 120.22 134.87 161.5 188.75 199.12 219.16 234 244.85 278.38Roof of coal Seam Max 539.17 554.32 579.22 603.6 618.2 636.73 649.17 653.4 694.14In band thickness Min 0.08 0.31 1.95 0.11 0.07 0.14 0.1 1.3 0.05

range(m) Max 1.19 2.05 6.87 1.94 1.29 1.2 3.98 6.61 1.62Ave 0.51 1.3 4.4 0.86 0.68 0.81 1.9 3.77 1.08

No.of BHS analytical data available 43 98 103 63 49 63 99 101 40

Moisture % Min 4.51 3.9 3.5 4.88 3.6 4.57 3.25 3.2 4(in band) Max 7.53 11.62 9.78 11.58 7.92 8.39 8.84 7.7 7Ash % Min 25.1 19.4 29.8 17.09 22.72 22.79 25.18 19.07 14.13

(in band) Max 48.37 37.26 44.26 37.8 41.87 47.03 43.42 35.57 33.4UHV Min 1709 3052 2251 2966 2542 1633 2402 3391 3726

(Kcal / Kg) Max 4628 5229 4175 5661 4918 4937 4608 5456 6112Min 9.4 17.26 16.66 7.7 9.65 7.21 0.06 24.17Max 20.21 28.33 25.56 18.09 20.34 18.91 12.87 41.36

DetailsSEAMS

No. of bore holes Seam

Parting with underlying seam

a. Geo-engineering data: Physico-mechanical properties are available for 15 boreholes. Summarized statement of Geotechnical testing data of Roof and floor strata of coal seams (BH.Nos: SBS-92 , SK-40,51,66,76,BPA -92, 130, 133A, 134, 194, 195, 204, 210, 286, MSK-11 & 26)

STRATA Roof of II Seam

Parting between II & SJ Seams

Parting between SJ & RS Seams

PARAMETERS Floor of RS Seam Density (gm/cc) 1.47-2.54 1.47-2.66 1.47-2.54 2.14-2.36 Porosity (%) - 11.56-15.04 5.74-15.51 - Primary wave

- 2.13-3.13 2.06-3.01 - Velocity Dry (km/sec) Secondary wave

- 1.25-1.84 1.38-1.77 - Velocity Dry(km/day) Tensile strength

3.57-69.04 2.90-52.03 3.71-35.05 4.67-26.87 (kg/cm2) Compressive strength dry (kg/cm2) 49-573 38-686 51-443 84-321 Compressive strength saturated (kg/cm2) - 172-363 219-287 Young’s Modulus-Dry

0.18-1.18 0.16-1.50 0.19-1.0 0.26-0.71 x105 (kg/cm2) Young’s Modulus-saturated

0.60-0.80 0.40-0.90 x105 (kg/cm2) Shear strength

9.97-98.99 8.65-105.59 9.97-79.91 14.35-67.30 (kg/cm2) Impact Strength Index 40.04-

55.84 46.30-57.88 40.24-52.06 47.12-51.35 Protodyaknov Index 0.12-4.06 0.08-4.75 0.13-1.57 0.26-1.38 Poison Ratio-Dry - 0.17-0.29 0.23-0.29 -

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STRATA PARAMETERS Roof of II

Seam

Parting between II & SJ Seams

Parting between SJ & RS Seams Floor of RS Seam

Poison Ratio

- 0.25-0.30 0.16-0.28 - -Saturated

SH

EA

R

TES

T O

F JO

INTS

Avg.Normal (Kg)

- 10.1-68.2 9.30-67.9 - Peak Shear test(kg) - 4.40-35.30 2.20-24.30 - Max.Shear Displacement (mm) - 0.36-2.24 1.60-36.40 - Shear Stiffness kg/mm) - 4.10-47.3 3.50-15.30 -

TRIA

XI

AL

STR

ES

S

Cohesion - 74.4-111.8 48.10-85.10 - Friction Angle (Degrees) - 38.88-39.65 34.97-47.66 -

b. Physico mechanical properties(PMP) and hardness of coal seams:

Summarized statement of Geotechnical testing data of coal seams (BH. Nos: BPA-130,133A, 194,195,204 & 210)

COAL SEAM PARAMETERS II Seam SJ Seam RS Seam Density (gm/cc) 1.47-1.65 1.32-1.89 1.37-1.40 Tensile strength(kg/cm2) - 23.7-41.0 - Compressive strength (kg/cm2) 84-235 75-352 154-174 Young’s Modulus x105 (kg/cm2) 0.25-0.54 0.24-0.76 0.39-0.43

TRIAXIAL STRESS

Cohesion - 85.3-153.9 - Angle of Internal Friction (Degrees)

- 29.50-43.69

-

In-situ stress data: Insitu Stress tests were carried in the boreholes (BHNo: 265&265A) of Shanthikhani Long wall block. Eight In-situ Stress Measurements were carried in various horizons from 366m to 476m depth range in 12 days time. Insitu stress measurements were done by Mesy (India) Pvt. Ltd, Lucknow. From the tests, it was concluded that the major horizontal stress direction is N (175±13) degrees.

It is inferred that a stress regime with Sh<Sv<SH with N-S direction of SH at the depth of about 400m.

Depth range 366m to 476m Shut in pressure increase with depth 5.8+0.035 (z,m-371) MPa Insitu_tensile rock strength (2.9±1.5)MPa Mean azimuth of vertical fracture 5.9MPa to12.7MPa Sh (MPa) 5.8+0.035(z,m-371) SH (MPa) 10.0+0.066(z,m-371) SV (MPa) 0.022.z,m

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Cavability: The assessment of cavability is done by determining the caving index number(I) using the CMRS, Dhanbad method for estimating the caving index number of overlying roof rocks, involving compressive strength, average length of core, and thickness of bed.

a. The cavability assessment for II Seam Top has been made by utilizing the data of Borehole 286. It is inferred based on the caving index values of the overlying strata of the seam that the roof strata of II Seam is "Easily Cavable" to "Moderately Cavable".

b. The cavability assessment for Salarjung seam Bottom has been made by utilizing the data of Borehole SK-40 . It is inferred based on the caving index values of the overlying strata of the seam that the roof strata of SJ seam is moderately cavable.

3. Geophysical investigations : In this block a total of 140 boreholes were geo-physically logged and the results are available.

4. Reserves: Seam wise reserves are given below

SEAM AREA RES.

IA 12.8789 7.8874

I 12.8959 22.9233

II 12.9394 81.9439

LB1 12.8818 13.8957

IIIB 12.8893 11.2019

IIIA 12.8859 12.9189

SJT 12.9050 33.2955

SJB 12.9270 62.3756

RS 12.8994 15.1798

TOTAL 116.1026 261.6220

5. Gradient and trend of Coal Seams The trend of coal seams established through sub surface data show that the strike of coal seams vary from N 300W to S 300E. The gradient of seams varies from 1 in 3.5 to 1 in 5 dipping towards North East.

6. Gassiness All the seams proposed for extraction are considered as Degree-I gassiness based on the data available in the working underground mines on the rise side of this proposed project.

7. Spontaneous Heating Incubation period has been considered as 12 months, based on data of depillaring districts of Bord & Pillar workings now being in operation in the adjoining mines.

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ANNEXURE-II

PRESENT STATUS The feasibility report of Shanthikhani Longwall Project was approved by GoI on 9/10/2006 with a rated production of 1.167MTPA with a mine take area of 1087.44 Ha. Now it is proposed to revise the feasibility report having a mine take area of 1301.84 Ha and with a capacity of 2-2.5MTPA. The proposed technology is Longwall.

Available Infrastructure:

1. Entries: Two inclines and one shaft are exists and one more shaft of 370 m depth connected recently and man winding arrangements are under process. One of the main Incline is being presently used for haulage road for transportation of equipment and another incline is being used for coal evacuation through belt conveyors. Details of entries are tabulated below.

Sl.No. Name Length/Depth Width/Dia Height Purpose 1 Manway 270M 4 M 3 M Travelling, Belt &

intake air way 2 Main Incline 270 M 4 M 3 M Haulage & intake air

way 3 Return shaft 40 M 6 M Return air way 4 Man winding

shaft 376 M 7.5 M Intake airway & Man

winding

2. Mining Lease details: This mine is covered under two mining leases as detailed below.

a. Tandur mining lease- 648.00 Ha b. SK LW Mining lease- 401.70 Ha

Additional Lease required for the proposed mine take area-246.30 Ha

3. Land Details*: Land covered under Forest area -700.74 Ha

Land covered under Non-forest area -601.10 Ha

Land under possession of SCCL -89.69 Ha

Forest Land to be acquired for the proposed project

a. For office buildings -1.92 Ha b. For approach road to II shaft -0.98 Ha c. For 2nd Ventilating shaft -2.25 Ha Total land required (Forest Land) - 5.15 Ha

4. Ventilation: At present 3 Lakh C.ft main mechanical ventilator is in operation and discharging 7000 cu.m/min of air with 70 mm water gauge and another mechanical ventilator of 2 Lakh C.ft is being used as stand bye.

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5. Men Transport: One Rail car system is operating from surface to 21 L and another Rail car system is in operation from 19L to 47L.

Shaft sinking of 376 mts depth is recently completed and Purchase of man winding equipment is under progress.

6. Surface bunker: 100 T surface bunker is available for dispatching the coal by road.

7. Power supply & water supply arrangements: 33KV power is provided at man winding shaft and existing inclines from 132 KV/33KV substation of Mandamarri area (SCCL). One filter bed is provided for filtration of pumped out water from the mine. Supply of Potable water is being arranged at strategic locations in the mine as well as at surface through Pipe lines.

8. Approach Roads: Approach roads are available for all mine entries and shafts and office building etc.

9. Underground Bunkers: 20 numbers Underground bunkers of 1500T capacity were proposed in the main incline from 36L to 42L. Out of which 6X75 T have been commissioned and remaining 14X75T construction has to be taken up.

10. Coal Transportation from UG to surface: Main Trunk belt conveyors of 1500 TPH capacity from surface to 42 L are commissioned and being used for coal evacuation from UG.

*Relevant plans enclosed. ANNEXURE-III

PROPOSED MINE LAYOUT

Method of Work:

it is proposed to work No.II seam in this mine which was not envisaged

earlier due to clay in the middle and roof of the coal seam in anticipation of

instability of roof & sides. Due to advancement in technology and support

system, it is decided to work now using the advanced supporting

techniques.

Apart from the entries already available it is proposed to drive one 7.5mts

diameter return air shaft of 370mts depth. An Incline with 1 in 5 gradient of

1570mts is also proposed to transport men and material by monorail

system.

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Since extraction of No II seam is envisaged a washery of 2.5 MTPA is

proposed beside the existing railway siding in the mine. The expected

grade of ROM from No II seam is G-12/G-13.

Existing railway siding is to be renovated.

The mine is planned to be worked by Longwall technology.

Workability of the Ross seam is also to be considered at later stage due to

higher grade of coal.

(All the relevant Plans are enclosed)

ANNEXURE-IV

COAL & MATERIAL TRANSPORTATION:

1. It is proposed to make use of existing coal evacuation system up to surface by making suitable modifications in the circuit.

2. Men and material transport is proposed from the Incline to be driven from surface to Salarjung seam.

ANNEXURE-V EXPECTED PRODUCTION

The expected production from the Shanthikhani Longwall project is from 2.00 MT to 2.50 MT with Longwall technology.

ANNEXURE-VI STATUS OF CLEARANCES

1. Mining Plan:

Mining plan was obtained on the name of “Mining plan for Shanthikhani Extension block”(Bellampalli area) vide letter No. 13016/12/97-CA, Dated 30.11.1999.

2. Mining Lease: This mine is covered under two mining leases as detailed below.

a. Tandur mining lease- 648.00 Ha b. SK LW Mining lease- 401.70 Ha

Additional Lease required for the proposed mine take area-246.30 Ha 3. Environmental clearance(EC):

EC is obtained for 1.167 MT vide lr no. J-11015/97/2004-IA.II (M) Dated 24.01.2006.

4. Ground water clearance: Clearance obtained to tap ground water from the Govt. of Andhra pradesh vide Lr. No 2898/Hg.III (1)/2004 dated 6.4.2005. Clearances to be Obtained:

1. Mining plan is to be revised as there is change in the proposed capacity and area.

2. Additional Mining lease to be obtained for 246.30 Ha 3. EC is also to be obtained for 2.5 MTPA capacity. 4. 5.15 Ha of Forest Land to be acquired for the proposed project.

****

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B. SHORTWALL (SW) MINING PROPOSAL- SRIRAMPUR AREA

The current Shortwall proposal envisages the extraction of 3.228 Mt of extractable reserves from 1A seam, 3.732 MT from I seam of RK-NT Mine and 5.548 MT from II Seam of RK-7 Incline Mine on cost per tonne basis from the selected bidder among global bidders. RK-NT and RK-7 Mine block is part of the Somagudem indaram coal belt. Details of this area along with relevant plans and borehole sections are enclosed as annexure.

ANNEXURE-I

DETAILS OF RK-NT & RK-7 INCLINE MINES

1. Geology of Somagudem-indaram coal belt : RK-NT Project forms a part of RK-7 geological

block and is located in the South central part of Somagudem-Ramakrishnapur-Indaram coal belt in the Northern part of Godavari Valley Coalfield on its western basin margin. The boundary to the west and south of the block is bounded by faults F24-F24 & F34-F34, while in the north it is bounded by the barrier between RK-6 and RK-7 mines. The eastern boundary is formed by the proved limit of the block and the arbitrary 300m depth line for seam IA. Surface land belongs to the forest department and is having no major surface structures.

Out of 8 seams encountered in RK-7 block, only top six seams (namely IA, I, IIB, IIA, II & IV) are having workable thickness. No. IA and I seams are being worked through RK-NT Incline and IIB, IIA, II and IV seams are being worked through RK-7 Incline. Since RK-NT & RK-7 inclines are working mines with all the seams developed extensively, the geo-mining conditions in this area are already known.

Seams present IA, I (under RK-NT) and IIB,IIA, II and IV seams (under RK-7 Incline)

Seam Structure The seams dip at 110 – 160 North east direction.

Fault details In this block, a total of 7 faults are encountered with throws ranging from 2m to 90m. Dip side property beyond 300m depth (of Seam-IA) is not yet fully explored by detailed exploration.

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2. Geo-engineering data ; The geo-engineering studies carried out on borehole samples and the Physico-mechanical properties of No.IA seam and its roof rock are as follows:

RK-7 INCLINE:

No.2 seam where Shortwall is being envisaged is having competent stone roof with an RMR of 67.5 categorized as "GOOD"

Reserves in RK NT &RK-7: Seam wise reserves earmarked for short wall mining are given below

SEAM RESERVES (MT) IA 3.228 I 3.732 II 5.548

TOTAL 12.509 Gradient of Coal Seams The gradient of coal seams varying from 1 in 4.0 to 1 in 4.5

Gassiness All the seams planned for extraction are of Degree-I gassiness based on the experience & data available in the working underground mine.

Spontaneous Heating Incubation period considered is 18 months, based on data available from the mine.

ANNEXURE-II

PRESENT STATUS OF THE AREA RK –NT and RK-7 mines are having common boundaries. The upper No.IA & 1 seams are being worked under RK-NT mine and lower seams are being worked under RK-7 Incline. The block is lying between latitude N 18 0 50’ 28” to N 18 o 52 ‘

18” and longitude E 79 0 31’14” to E 79 0 32’54” and covers an area of 3.44 Sq.km.

. PMP 1A Seam roof 1A Seam 1A Seam floor/1 seam roof

Density (gm/cc) 2.00-2.54 1.25-1.83 2.06-2.41 Comp strength (kg/sq.cm) 70 - 449 - 90 -465

Tensile strength (kg/sq.cm) 6.10 -43.93 - 1.08 – 45.30

Shear strength (kg/sq.cm) 12.90 – 101.75 - 26.60 – 105.10

Young’s Modulus (x105 kg/sq.cm) 0.10 – 0.94 - .021 – 0.83

Protodyakonov Index 0.23 – 2.02 1.08 -2.33 0.36 – 2.30

Impact strength Index 46.80 – 53.63 - 47.80 – 53.90

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Entries details: RK-NT Mine:

Sl No. Name Length Width Height Purpose

1 Main Incline (intake) 280 m 4.2 m 2.4 m

For main haulage & intake airway

2 Man Way(intake) 270 m 4.2 m 2.4 m

For travelling road way & intake airway

Shafts

1 Air shaft ( intake) 5.5 m 51 m

Connected to 1A seam For intake air shaft

2 Air shaft (return) 5.5m 72 m

Connected to 1 seam. Return air way

RK-7 Incline:

S.No. Name Length Width Height Purpose 1 Manway 351m 4.2 2.0 Travelling road & belt

conveyor 2 Main Incline 326m 4.20 2.4 Haulage

Infrastructure Facilities

RK-NT Incline is an ongoing mine with well established facilities like offices, UG Man riding system, surface bunkers, coal and material transport arrangements to deal with the Shortwall production. The infrastructural facilities are sufficient to deal with the existing production from the Shortwall Mining.

RK-7 incline is also having separate entries and offices, UG Man riding system, surface bunkers, coal and material transport arrangements. These facilities are capable to deal with a production of 0.7 MTPA.

Pumping Well established pumping arrangements are available in the mine.

Surface Sub-station

The incoming supply to surface sub-station is 33 KV to meet the various surface and underground loads.

ANNEXURE-III

PROPOSED MINE LAYOUT /METHOD OF WORK

The present proposal is to extract the standing pillars with Shortwall mining in No. 1A seam and I seam of RK-NT Mine and No.II seam in RK-7 Incline. The average thickness of IA seam is 5.8m. The proposed thickness for extraction is 4.5m and having extractable reserves of 3.228 Mt. The average thickness of I seam is 5.5m. The proposed thickness for extraction is 3.5m and having extractable reserves of 3.732 Mt.

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The average thickness of II seam is 5.8 m. The proposed thickness for extraction is 4.5m and having extractable reserves of 5.548 Mt. All the projections plans and borehole sections are enclosed in pdf format along with this document.

ANNEXURE-IV

COAL & MATERIAL TRANSPORTATION:

Now coal is being transported by a net work of belts and the same will be continued in these mines after introduction of Shortwall.

Well-established haulage layout exists in the mine. The Material supply to the proposed panels will be through the established haulage system.

ANNEXURE-V

EXPECTED PRODUCTION

The expected production from the Shortwall project is around 0.5 MT to 1.0 MT Per year.

ANNEXURE-VI

STATUS OF CLEARANCES

Mining Plan: Mining plan was obtained on the name of “Revised mining plan for part of Indaram Mining Lease (RK-6, RK-7 and RK-NT Incline of SCCL” (Srirampur area) vide letter No. 13016/5/2007-CA-II, Dated 17.09.2007.

Mining Lease: Indaram Extension Mining Lease GOMs No.203 Dt.31.07.2008 for a period of 30 years. Forestry and EMP clearance

MOEF (GOI) approved release of 8.96 Ha of Forest land for mine entries and pit head establishments vide their Lr. No. 8-70/90-FC dated 22.12.1993. The Environment clearance for this project based on EMP submitted in March 1993 was accorded by MOEF (GOI) vide Lr. No. J-11015/16/88-IA.II (M) dated 04.02.1994.

CLEARANCES TO BE OBTAINED: 1. Mining plan is to be revised as there is change in the proposed capacity. 2. Additional Mining lease to be obtained. 3. EC is also to be obtained for enhanced capacities. 4. Existing Nallahs over the mines need to be diverted for depillaring the panels

proposed underneath them.

All the proposed mines are working mines and all the relevant statutory clearances were already obtained for the existing production. However after introduction of shortwall mining in the proposed mines all the relevant necessary permissions need to be obtained.

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C. SHORTWALL (SW) MINING PROPOSAL - BHUPALAPALLI AREA

Further SCCL would like to introduce Shortwall technology in Bhupalapalli area mines where huge reserves exist in the form of pillars in steep gradient conditions. The property identified for Shortwall is in No.1 and No.2 seams of KTK 1 Incline, KTK 5 and KTK 6 Incline mines. The seam wise and mine wise reserves proposed for Shortwall Mining are given as below:

SNo Mine/ Project

No.1 Seam Reserves in MT

No.2 Seam Reserves in MT

Remarks

1 KTK 1 Incline

1.91

4.574 Including annexed property from No.3 Incline mine.

2 KTK 5 Incline 3.962 4.282

3 KTK 6 Incline 0.705 1.276

Total 6.577 10.132

The coal seams pertain to Mulugu coal belt of GVCF. Details of this area along with relevant plans and borehole sections are enclosed as annexure.

ANNEXURE-I

Geology of Bhupalapalli Area Proposed Mines For SW Mining

1. Geology of Mulugu coal belt:

The continuity of coal bearing Barakar Formation in Godavari Valley Coal Field is broken and missing at places due to faulting, and therefore, the different coal bearing areas occurring in isolated pockets are generally treated as separate coal belts. Mulug coal belt, about 100km. long, is extending from Maneru river in the North West to Lingala in the south east on the western margin of the basin in the central part of Godavari Valley Coal Field. It is bounded by North latitudes 180 00 to 180 15’ and East longitudes 790 45 ’ to 800 20’ covered in survey of India Topo sheet Nos. 56 N/10 N/14, N/15, 65 B/3&4 in Warangal & Khammam districts.

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Seams present Workable seams present in the area are viz., IA, I, II and III seams.

Seams Structure Structurally the Mulugu Coal belt is traversed by number of strike and transverse Faults resulting in repetition/ omission of strata. The major faults are mostly aligned parallel to the general trend of the coal belt. The regional strike is in general NW-SE with North-easterly dips ranging from 150 to 250 with local variations.

Seams thickness Details are tabulated as below:

Sequence Of Coal Seams Of Barakar Formation In Bhupalapalli Area

Seam parting Lithology

Thickness range (As encountered

from Boreholes)(m) Min Max

BARREN MEASURES

Parting Grey white sst with clay bands 15.25 21.20

IB-Seam Coal 0.23 2.17

Parting Grey, sst 4.25 10.90

Index Seam Coal 0.18 1.08

Parting Grey sand stone 2.47 12.58

IA seam Coal with bands 0.62 2.57

Parting Grey sst with Thin clay/shale bands 15.0 35.50

I Seam Coal with clay/ shale bands 1.50 4.15

Parting Grey sst with thin shale / clay bands 12.64 22.26

II (Top) Coal 0.30 2.12

Parting Carb shale,shale,clays,sst 2.33 14.33

II (Bottom) Coal with shale / clay bands 1.10 4.23

Parting Grey white sst with coal, clay/shale bands 28.30 44.60

III B seam Coal 0.16 1.80

Parting Grey white sst 11.20 18.72

III A seam Coal 0.10 1.12

Parting Grey white sst 11.06 17.80

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III Seam Coal 0.60 3.66

Parting Grey white sst 2.28 13.56

IV A Seam Coal 0.68 1.77

Parting Grey white sst 18.56 23.17

IV Seam Coal 0.22 1.34

Parting Grey white sst

TALCHIR FORMATION

Fault details : The faults are varying in throws from 5m to more than 1000m extend several kilometres.

2. Geo-engineering data :

Summarised data on physico-mechanical properties of roof and floor rocks of INDEX, IA, I, II(TOP), II (BOT), IIIB, IIIA, III, IVA AND IV SEAMS (BH NOS. 482 & 577)

Strata Density (gm/cc)

Tensile Strength (kg/cm2)

Compressive Strength (kg/cm2)

Youngs Modulus

X 105 (kg/cm2)

Shear Strength (kg/cm2)

Impact Strength Index

Proto dyaknov Strength

Index RQD %

Parting between IB and Index 2.21-2.28 21.97-29.31 217-338 0.50-0.73 50.03-72.12 49.49-51.64 0.88-1.35 95-98

Parting between Index and IA Seam 2.10-2.30 12.06-42.29 152-437 0.38-0.87 32.94-98.51 48.33-53.14 0.57-1.95 92-100

Parting between IA and I Seam 2.02-2.30 12.23-33.78 144-384 0.36-0.91 30.41-81.77 48.18-52.47 0.54-1.65 43-100

Parting between I and II (Top) Seam

2.15-2.29 15.03-29.71 142-316 0.36-0.69 33.47-70.21 48.15-51.25 0.52-1.36 52-96

Parting between II(Top) and II (Bot.) Seam

2.28-2.32 23.67-50.28 257-388 0.58-1.26 56.95-127.63 50.20-56.62 1.07-2.85 76-93

Parting between II (Bot.) and IIIB Seam

2.19-2.32 14.64-43.27 166-457 0.41-0.96 35.72-101.22 48.58-53.77 0.63-2.05 71-100

Parting between IIIB and IIIA Seam 2.17-2.32 20.91-38.75 219-474 0.51-0.99 49.03-98.20 49.52-54.07 0.88-2.14 62-99

Parting between IIIA and III Seam 2.12-2.34 11.30-42.40 164-492 0.40-1.09 34.64-100.53 48.54-55.02 0.71-2.40 63-100

Parting between III and IVA Seam 2.22-2.29 14.31-34.43 194-431 0.09-0.91 38.81-90.01 45.61-53.31 0.77-1.62 42-99

Parting between IVA and IV Seam 2.19-2.36 14.82-37.52 186-483 0.44-1.01 39.45-87.31 48.93-54.23 0.74-2.17 35-100

Floor of IV Seam 2.27-2.31 23.37-46.16 282-473 0.63-1.00 58.82-107.75 50.65-54.16 1.19-2.16 81-100

Cavability:

1. Roof strata of IA Seam is classified as “Moderately difficulty in Caving” to ”Roof cavable with difficulty” ,

2. Roof strata of I Seam is classified as “Easily cavable” to “Roof Cavable with considerable difficulty”

3. Roof strata of II (Bot) seam is classified as “Easily cavable” to “Roof cavable with considerable difficulty”.

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4. Roof of IIIB seam is classified as ”Easily cavable” to “Roof cavable with considerable difficulty”.

5. Roof of IIIA is classified as “Easily cavable” to “Roof cavable with considerable difficulty”.

6. Roof of III seam is classified as “ Moderately difficult “ to “Roof cavable with considerable difficulty”. Roof of IVA seam is classified as “Weak roof” to “Roof cavable with considerable difficulty”.

7. Roof of IV seam is classified as “Easily cavable” to “Roof cavable with considerable difficulty”.

Reserves: Seam wise reserves earmarked for Shortwall Mining are given below

SEAM RESERVES (MT) I 6.576 II 10.132 TOTAL 16.708

Gradient of Coal Seams The gradient of coal seams varying from 1 in 2.5 to 1 in 4.

Gassiness All the seams proposed for extraction are of Degree-I gassiness based on

the data available in the working underground mines/ adjoining mines.

Heating Incubation period is 18 months, based on data of depillaring districts of the

existing mines of the area.

ANNEXURE-II

PRESENT STATUS OF THE AREA

Infrastructure facilities

All mines are having well established facilities like offices, UG Man riding system, surface bunkers, coal and material transport arrangements to deal with 5.00 LT per annum. The main transportation system is by haulage in all the mines. To deal with increased production from the Shortwall, conveyor belts are to be laid in all the mines. Certain infrastructural facilities to cater the increased production are to be put in place.

Pumping

The drainage and pumping arrangements are well established in all the mines of the area. The make of water from the proposed Shortwall district will be around 500 GPM and additional 240 HP pump is envisaged to deal that extra 500 GPM.

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Surface Sub-station

The incoming supply to surface sub-station is 33 KV to meet the various surface and underground loads.

ANNEXURE-III

PROPOSED MINE LAYOUT /METHOD OF WORK

Shortwall mining is proposed in KTK-1, 5 and 6 Incline mines to extract standing pillars with a face length of 90-110 m. The pillars are developed in full dip gradient of around 1 in 2.5 to 1 in 3.

The average thickness of I seam is 3.0 m. The proposed thickness for extraction is 3.0 m having extractable reserves of 6.576 Mt. The average thickness of II seam is 4.0 m. The proposed thickness for extraction is 3.0 m having extractable reserves of 10.132 Mt.

ANNEXURE-IV

COAL & MATERIAL TRANSPORTATION: Infrastructure to deal with Shortwall output is to be put in place once it is firmed

up. ANNEXURE-V

EXPECTED PRODUCTION The expected production from the Shortwall project is from 0.5 MT to 1.0 MT Per

year. ANNEXURE-VI

STATUS OF CLEARANCES All the proposed mines are working mines and all the relevant statutory clearances were already obtained for the existing production. However after introduction of shortwall mining in the proposed mines all the relevant necessary permissions need to be obtained.

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