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Author: Admin | 2025-04-28
Ore, and again work their way forward. This is done two or three times until the broken ore is 15 or 20 ft. high, then the miners start again farther ahead and the shovelers begin to shovel the broken ore, first into the raise chute, until they reach the next ore chute. As soon as they have passed the ore chute, a temporary opening is made in the raise chute and waste is dumped into the chute from the level above and allowed to run on to the sheeting as long as it will; then a track is started about 6 ft. from the top of the slope, the waste is taken from the chute in a car and the filling of the stope continued to the first ore chute. The shovelers being now out of the way, the timbermen build up the ore chute one compartment wide and two in length, using small round stulls, 6 to 8 in. in diameter, to the level of the waste track. The waste-men then continue tilling the stope, following the shovelers.When the miners have gone as far as the slope is to be worked, they return and start another floor on top of the waste filling, which has been covered with a floor of 2-in. plank to keep the ore clean.If at any time the ground changes and gets heavy, square setting can be started on the waste filling, and this is generally done when the stope has been worked out to within a floor or two of the level above.For particulars regarding square-set timbering reference is here made to a series of articles by Claude T. Rice. These articles were largely made up from data furnished by the author of this paper.
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