Geologic Reconnaissance in the Matanuska and Talkeetna Basins, AlaskaU.S. Government Printing Office, 1907 - 71 sayfa |
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76 sonuçtan 1-5 arası sonuçlar
Sayfa 6
... pay streak of a placer mine on Crooked Creek ; B , Mining with horses and scrapers on Gold- bottom Creek__ VII . Hydraulic mining on Daniels Creek_ . VIII . Topographic reconnaissance map of the southern part of Sew- ard Peninsula . 252 ...
... pay streak of a placer mine on Crooked Creek ; B , Mining with horses and scrapers on Gold- bottom Creek__ VII . Hydraulic mining on Daniels Creek_ . VIII . Topographic reconnaissance map of the southern part of Sew- ard Peninsula . 252 ...
Sayfa 128
... pay streak for each period of deposition . It is exceptional , however , to find more than one pay streak . a Posepney has argued that the particles of gold were 128 GOLD PLACERS OF SEWARD PENINSULA .
... pay streak for each period of deposition . It is exceptional , however , to find more than one pay streak . a Posepney has argued that the particles of gold were 128 GOLD PLACERS OF SEWARD PENINSULA .
Sayfa 135
... pay streak is assumed to average 3 feet in depth , which is believed to be a conservative estimate . By this ... pay streaks thus far mined have a very high gold content , it is equally certain that this gold tenor is not maintained ...
... pay streak is assumed to average 3 feet in depth , which is believed to be a conservative estimate . By this ... pay streaks thus far mined have a very high gold content , it is equally certain that this gold tenor is not maintained ...
Sayfa 136
... pay streak is assumed to be 15 yards and the depth 3 feet , the total bulk of the creek gravels would be about 20,000,000 cubic yards , of which probably 600,000 cubic yards have been worked out . This leaves a total for unworked creek ...
... pay streak is assumed to be 15 yards and the depth 3 feet , the total bulk of the creek gravels would be about 20,000,000 cubic yards , of which probably 600,000 cubic yards have been worked out . This leaves a total for unworked creek ...
Sayfa 137
... pay streak are not considered as gold - bearing . Of the 750 linear miles of gold - bearing creeks , only 172 miles ... paying portions of creek carry gold aggre- gating $ 95,000,000 , or $ 1,900,000 to the mile . According to Ham- mond ...
... pay streak are not considered as gold - bearing . Of the 750 linear miles of gold - bearing creeks , only 172 miles ... paying portions of creek carry gold aggre- gating $ 95,000,000 , or $ 1,900,000 to the mile . According to Ham- mond ...
Sık kullanılan terimler ve kelime öbekleri
Alaska andesite Anvil Creek basin beach beam bed rock bench Bendeleben Mountains bowlders Brooks Bull Cape Nome cement cent channel Chickaloon Chickaloon Creek chloritic claims clay coal coarse coastal plain Collier concrete conglomerate contain creek bed district ditch east elevation erosion feet thick Geological Survey geology Glacier gold placers granite graphitic gravel greenstone Gulch inches intrusive Iron Creek Jurassic Kenai Kigluaik Mountains Knik Knik River Kougarok Kuzitrin Kuzitrin River limestone lower Matanuska Matanuska River material mica schist miles mineral mining Moffit mouth muck Niukluk Niukluk River Nome and Norton Nome group Nome River Norton Bay Norton Bay regions nuggets occur Ophir Creek pay streak pebbles placer gold Port Clarence probably reconnaissance reported sand sandstones schist Seward Peninsula Shale slates slopes sluice boxes special publication stream surface Susitna Talkeetna Mountains test pieces tributary U. S. Geol upper valley
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