Show CHANGES MAnE Mt IN FOR MINE WORK t. t Cross Hc Head d Required on on- Foot Shaf Shafts Held Very Very 1 Important The Te changes changes' In the metal mine safety coe code Just approved by ti the state Industrial commission to ta take effect August 1 deal particularly with mine shafts shaft and ad work connected with wih them according to E. E A. A Hodges Hodge Hoges state metal mine Inspector Mr Hodges Hoges believes that the two two- most important changes are arc ae tho those t thos which demand a safety cross head ha on buckets used in i shafts shaft 30 feet hd deep deen or more snore and the substitution of or auto matic stops stop on hoisting engines engIne in In place of the old safety bump ers on the hoisting frae frame bump Another Important change Js is tha that thai all aU shots hot fired fied In a a shaft shat change that is I in in- sinking of ot a shaft haf must be set Eel Et off ot electrically In except such cases ce a as a are exempted by the commission commission- The exemptions will 11 be mainly those prospect holes In which It would would work WO dwork work a 1 hardship on the mine miners to demand electrical shooting A fourth change Is that companies operating with vertical shafts to have hoisting a-hoisting engineer on duty all the tho time when men arc work work- tag big in the mine The cross head which the indus trial commission requires be used In mines over feet deep is declared to be the best ye yet developed by nun min ing engineers A cross head Is that part of the hoisting equipment which slides along the guides In the shaft assuring smooth transit of the bucket Under Onder the old regulations the tho cro cross head had to be only two thirds as high as it lA was wide Experience showed that this type was of many of-many many fatalities The new one new one will be on one aria ana a nan times as high as It Is wide thereby eliminating the tendency tendency tend tend- ency to tip and wedge Better dogs which catch the cross head in case th the rope parts are also required For mines less than feet deep the old cross head or no cross head at all can be used providing that the cable cable is used and provid ing that the shaft Is properly lined and contains nothing which will catch the free swinging bucket The old regulations also cited the t necessity of a safety bumper which which would be strong enough to cause the breaking of the hoisting cable in incase case the engineer failed to stop the stop the hoist and the men were heading for tile the sheave wheels The parting of the cable released a set of chairs which swung into the shaft and caught the cross head or cage before It could fall down the shalL shaft This was was' con sides sides-ed a rather dangerous safety j tern teni and In the future nil all will be provided with an automatic control which will stop the cage or bucket before it gets too far hoisting frame |