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AMERICAN INSTITUTE OF MINING AND METALLURGICAL ENGINEERS-MINE PLANT 281 282 AMERICAN INSTITUTE OF MINING AND METALLURGICAL ENGINEERS-MINE PLANT

GRIZZLIES, CHINAMAN CHUTE CHAPTER XlIXII CHAPTER XXXII GRIZZLIES, CHINAMAN CHUTE .

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Side View ' End Section ' XXXII-5* @231 CHINAMAN CHUTE AND GRIZZLY, BURRA BURRA MINE, TENNESSEE COPPER CO., COPPERHII~L, TENN.

Timbers Range from 8(h 8010 8': 120 Timbers are Encaeed in 4 L I rons which According to ~ e n s t h of Span are held i n Place hy % " ~ o l t a . lhese Boils 80 Lb.Rails are used also Bold t h e 3h"x 0': 54"L's which makr Rails are Placed upside down. Flanges ore t o e Holders for the Roil8 Reinforced by l'h 4"lron. Riveted t o t h e m Webs are Pilled p u t even with Ball by 2': d ' l r o n for Fyll Length of Rail

*. - 1811--,+ '!-* *. 2

I Grizzly, block-holing cfaunabet and we pcckst

S t a n d a r d l o a d i n g s t a t i o n i n s t a l l a t i o n , showing g r i z z l y c h a m b e r , o r e p o c k e t , l o a d i n g c h u t e , and d e t a i l s o f g r i z z l y c o n s t r u c t i o n

Detail of grizzly