Results: 1 - 10 of 11
Feb 15, 2010
Open File Report
Dec 31, 2006
Geo-Note
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 …
Aug 15, 2011
Open File Report
… siltstone interbeds and isolated sand-filled gutter casts, both …
Jul 20, 2011
Open File Report
Aug 17, 2011
Open File Report
Dec 31, 1989
Open File Report
Apr 30, 2012
Open File Report
Apr 23, 2017
Data
… unit (SU) 3, which contains sand and/or gravel resting on the …