Show HOMESTAKE TO USE CONCRETE kingman ariz miner the i homestake Home stake mining t company has been making experiments in the use of concrete in mining operations and it is understood that the results indicate that this method will find a permanent place in their future work the experiment lias has been conducted in one of the on the foot level and is designed to do away with an immense amount of timbering and at the same time act as a preventative against the spread of possible fires the idea is to wall up a after the ore has been mined in such a manner that the timbering may be removed and used at other points in the mine where ore is being im taken out and at the same time leave the perfectly safe and free from the possibility of caving in the which has been experimented on thick concrete walls have been erected close to the walls of the and carried to the roof where they are arched over similar walls are erected at both ends of the so that the concrete work forms a room built within the original and having only small openings the size of an ordinary working tunnel at each end these openings may be tightly closed up in case of fire in the vicinity and the spread of the flames to other parts of the mine thus prevented the concrete work thus far accomplished has been done on the foot level in the neighborhood of the star hoist and it is the intention to continue it at this level and proceed with it to the higher levels in time eventually the lower levels will be similarly concreted as the are stripped of their ore and abandoned |