Adam Clarke's Commentary on the Bible - Job 28:10
He cutteth out rivers among the rocks - He cuts canals, adits, etc., in the rocks, and drives levels under ground, in order to discover loads or veins of ore. These are often continued a great way under ground; and may be poetically compared to rivers, channels, or canals. His eye seeth every precious thing - He sinks those shafts, and drives those levels, in order to discover where the precious minerals lie, of which he is in pursuit. read more
Adam Clarke's Commentary on the Bible - Job 28:9
He putteth forth his hand upon the rock, - Still there appears to be a reference to mining. Man puts his hand upon the rock, he breaks that to pieces, in order to extract the metals which it contains. He overturneth the mountains - He excavates, undermines, or digs them away, when in search of the metals contained in them: this is not only poetically, but literally, the case in many instances. read more