. The Southern States. nR\- IIOISH AND STORACF. KINS ON PKACF. RIVER. THE FLORIDA PHOSPHATE INDUSTRY. 353. DREDGING PEBBLE PHOSPHATE AT PHOSPHORIA. mechanical handling of the output ofthe pebble mines. In some of thelarger workings in the hard rock regionthe material is raised from the pits inbuckets traveling on cables suspendedbetween towers. At Dunellon thismethod has been followed on an exten-sive scale, and in one large pit theexcavation has been carried to a depthof sixty feet. It is contemplated bythis company to introduce a steamshovel by which material can be exca-vated much more rapi
. The Southern States. nR\- IIOISH AND STORACF. KINS ON PKACF. RIVER. THE FLORIDA PHOSPHATE INDUSTRY. 353. DREDGING PEBBLE PHOSPHATE AT PHOSPHORIA. mechanical handling of the output ofthe pebble mines. In some of thelarger workings in the hard rock regionthe material is raised from the pits inbuckets traveling on cables suspendedbetween towers. At Dunellon thismethod has been followed on an exten-sive scale, and in one large pit theexcavation has been carried to a depthof sixty feet. It is contemplated bythis company to introduce a steamshovel by which material can be exca-vated much more rapidly and economi-cally. Elsewhere in the hard rockregion the material is handled in carsrunning on a narrow gage railway,which is moAed from place to place asthe work proceeds. In other mines,again, all the material is handled in cartsor e\en in wheelbarrows. The \aryingcharacter ol the material, from coarsegravel to boulders v>eighing tons, andthe lack of uniformity in the depositswhich are sometimes thick beds of largearea and again mere pockets of a few-cubic yards, render uniform methods ofminin
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Keywords: ., bookcentury1800, bookdecade1890, booksubj, booksubjectagriculture
