Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
First placer gold dredger on Gold Coast started operation in 1902 on Offin river; during 1909 there were 15 operating on 5 rivers; work stopped in 1925; Tano river area being prospected; adverse digging conditions overcome by special features of dredge design; two dredges completed, 10 cu ft buckets; ladder permits digging depth 40 ft below water; swinging stacker.
First placer gold dredger on Gold Coast started operation in 1902 on Offin river; during 1909 there were 15 operating on 5 rivers; work stopped in 1925; Tano river area being prospected; adverse digging conditions overcome by special features of dredge design; two dredges completed, 10 cu ft buckets; ladder permits digging depth 40 ft below water; swinging stacker.
Gold dredging in west Africa
Eng Min J
Blanchard, F.M. (Autor:in)
1936
3 pages
Aufsatz (Zeitschrift)
Englisch
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"Pre-dredging Assessment in West Africa"
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