Resources being utilized are not very rare or intrinsically valuable; value is due primarily to their proximity to biggest market in country and to excellent transportation facilities which have made their exploitation easy and cheap; map showing location of operations.
Nonmetallic mineral resources of New Jersey
Pit Quarry
Pit and Quarry ; 22 , n 13
1931
8 pages
15 Figs.
Aufsatz (Zeitschrift)
Englisch
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