The pictorial sketch-book of Pennsylvania : or, its scenery, internal improvements, resources, and agriculture, popularly described . 10 MINERS TOOLS. Ill is used to break larger pieces of rock or mine, A miners sJiovel ispointed, so as to penetrate the coarse and hard fragments of mineralsand rocks. All these tools should be well steeled and tempered, andkept in good repair. Besides these, the miner requires the following blasting tools: ahand-drill, which is a bar of iron or steel, edged at one end and. FRONT VIEW OP A PENNSYLVANIA BLAST FURNACE. headed at the other—both well hardened and te
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