Results: 1 - 3 of 3
Jan 23, 2020
Data
… quartzite, other stones, clay, shale, salt, potash, gypsum, sodium …
Jan 08, 1973
Open File Report
… building stone, quartzite, and shale - potentially the base for a … to 1956, plus some quarrying of shale and limestone. By far the …
Dec 31, 1957
Earth Sciences Report