...bench, which farther NE. is composed of ore that will in later years be considered good enough to mine, becomes a series of thin strata of lean ore and shale,...becomes shaly and carries only a very low-grade ore. The best part of the " Irondale seam " is on Red Mountain between Pilot Knob on the NE. and Lone Pine Gap...

...portion of the district the lower bench, which farther northeast is composed of ore that may eventually be mined, becomes a series of thin strata of lean...carries only a very low-grade ore. The Irondale seam is of most value along Red Mountain between Pilot Knob on the northeast and Lone Pine Gap on the southwest....

...portion of the district the lower bench, which farther northeast is composed of ore that may eventually be mined, becomes a series of thin strata of lean...becomes shaly and carries only a very low-grade ore. The Irondalc seam is of most value along Red Mountain between Pilot Knob on the northeast and Lone Pine...

...bench, which farther XE. is composed of ore that will in later years be considered good enough to mine, becomes a series of thin strata of lean ore and shale,...becomes shaly and carries only a very low-grade ore. The best part of the Irondale seam is on Red mountain between Pilot knob on the NE. and Lone Pine gap on...

...bench, which farther northeast is composed of ore that may eventually be mined, becomes a series of strata of lean ore and shale and is consequently of...becomes shaly and carries only a very low-grade ore. From this description of the Big seam it is evident that mining is removing 50 per cent or less of...

...the Big seam is the workable pari in the northeast end of the district, but the upper bench is of m*t importance throughout the rest of the area. In the...ore and shale, and is consequently of no possible valm •: and finally the upper bench itself becomes shaly and carries only* very low-grade ore. The...