Results: 1 - 3 of 3
Dec 31, 1970
Earth Sciences Report
… of many industrial sand products are outlined in this … concern high purity silica sand used as a raw material for the … industry, and for moulding sand, hydraulic fracturing sand, …
Jan 23, 2020
Data
… marl, tufa, phosphate, silica sand, pumicite, sulphur, fly ash, humalite, and sand and gravel. This dataset is …
Jun 04, 2008
Special Report
… 31 stream sediment sites, the sand-sized fraction from 12 of … from 142 sites and bulk sand-sized fraction samples from 81 …