[Map Showing Locations of Rock and Mineral
2016-2-26 · in iron ore, bromine, magnesium compounds, sand and gravel; Fourth in stone and peat; Fifth in portland cement. METALLIC MINERALS IRON ORE: Shipments of iron ore, from 32 underground mines and 9 open pits totaled 9,722,884 long tons (2,240 lbs.) in 1954, a decrease of 27.3 per cent from 1953. This is the lowest total shipment since 1946 when