scholarly journals Mineral deposits of Maryland, excluding fuels, sand, and gravel

10.3133/mr12 ◽  
1961 ◽  
Keyword(s):  
Mineral Deposits ◽  
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.

New Sand and Gravel Driers

1876 ◽  
Vol 1 (7supp) ◽  
pp. 101-101
Author(s):  
S. S. Daish
Keyword(s):  
Sand And Gravel

FINDING, USING, AND ACCOUNTING FOR ADDITIONAL RESOURCES OF MINERAL DEPOSITS PRONE TO GAS-DYNAMIC PHENOMENA

2018 ◽  
Vol 1 (1) ◽  
pp. 14-21
Author(s):  
Iofis M.A. ◽  
◽  
Esina E.N. ◽  
Ivanov E.S. ◽  
◽  
...  
Keyword(s):  
Mineral Deposits ◽  
Gas Dynamic ◽  
Dynamic Phenomena

THREAT ASSESSMENT OF THE DEPLETION OF TRADITIONAL FUEL-ENERGY RESOURCES

2017 ◽  
Author(s):  
Nikolay Tymchenko ◽  
◽  
Nataliia Fialko ◽  
Keyword(s):  
Threat Assessment ◽  
Energy Resources ◽  
Mineral Deposits ◽  
Fossil Energy ◽  
Global Threat

The issues of the global threat seeing depletion of the main types of traditional fossil energy resources were analyzed. The data is given on the proven world reserves of these energy resources and the timing of their depletion. The theory of M.K. Hubbert on the depletion of mineral deposits is considered. The application of the theory to assess the reserves of fossil energy resources in different countries is analyzed.

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