Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Dredging placer gravels at Breckenridge, Colorado
Illustrates and describes the ground worked and the construction and operation of the dredges. (5000 w.) (No. 93520 C)
Dredging placer gravels at Breckenridge, Colorado
Illustrates and describes the ground worked and the construction and operation of the dredges. (5000 w.) (No. 93520 C)
Dredging placer gravels at Breckenridge, Colorado
Mines Min
Lakes, Sr., Arthur (Autor:in)
1908
Aufsatz (Zeitschrift)
Englisch
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The Breckenridge gold placers, Colorado
| Engineering Index Backfile | 1908
Hydraulic dredging for gold-bearing gravels
| Engineering Index Backfile | 1909
| Engineering Index Backfile | 1907
| Engineering Index Backfile | 1909
Extending scope of placer dredging
Engineering Index Backfile | 1941