Mineral deposits and occurrences in New Hampshire, exclusive of clay, sand and gravel, and peat

10.3133/mr6 ◽  
1957 ◽  
Keyword(s):  
New Hampshire ◽  
Mineral Deposits ◽  
Sand And Gravel

scholarly journals Distribution of sand and gravel in New Hampshire

1994 ◽  
Author(s):  
Carl Koteff ◽  
David R. Soller
Keyword(s):  
New Hampshire ◽  
Sand And Gravel

Disturbed Sampling Using Reverse Circulation

1986 ◽  
Vol 2 (1) ◽  
pp. 283-287
Author(s):  
M. R. Hurley ◽  
M. D. Lavender
Keyword(s):  
Water Table ◽  
Mineral Deposits ◽  
Drill Bit ◽  
Offshore Drilling ◽  
Reverse Circulation ◽  
Beach Sands ◽  
Sand And Gravel ◽  
Return Valve ◽  
Industrial Sand

AbstractThe exploration of unconsolidated and semi-consolidated strata is generally undertaken using shell and auger and continuous flight augering techniques. These methods have serious limitations, especially when accurate sampling is required below the water table.To improve the reliability of samples British Industrial Sand Ltd. have developed a drill bit for use with reverse circulation drilling. When used in combination with a non-return valve this method allows continuous drilling and sampling both above and below the water table.Comparisons with other drilling techniques show that the duo-pipe method is capable of delivering uncontaminated samples and recovering material of all anticipated size ranges.The system could be adapted for use in the exploration of other mineral deposits e.g. alluvial tin, beach sands, sand and gravel, or for offshore drilling programmes.

scholarly journals New Hampshire and Vicinity Continental Shelf: Sand and Gravel Resources

2021 ◽  
Author(s):  
Larry Ward ◽  
Zachary McAvoy ◽  
Maxlimer Coromoto Vallee-Anziani
Keyword(s):  
Continental Shelf ◽  
New Hampshire ◽  
Sand And Gravel
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