National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

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Rotary Drilling Exploration of the Ryan Lode Properties, Fairbanks Mining District, Alaska.

PB211433

Publication Date	1972
Personal Author	Warfield, R. S.; Thomas, B. I.
Page Count	34
Abstract	A rotary-drilling exploration system was tested at the Ryan Lode, Fairbanks mining District, Alaska, to determine its application as a substitute for a surface trenching and to evaluate the open-pit mining potential of a wide shear zone that contains gold-bearing gold-quartz veins. The drilling sampling system was verified as a practical substitute for surface trenching that minimized environmental damage but where tested, the shear zone material does not contain sufficient values, together with individual vein values, for open-pit mining. (Author)
Keywords	Rotary drilling Mineral deposits Evaluation Gold Rotary drills Stratigraphy Formations Trenching Environmental engineering Feasibility Open pit mining Alaska Ryan lode properties Fairbanks(Alaska)
Source Agency	Invalid Source Agency Code
NTIS Subject Category	48A - Mineral Industries
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Supplemental Notes	Report on Drilling Exploration, 1969-70.
Document Type	Technical Report
Title Note	Open file rept.
NTIS Issue Number	197220

Rotary Drilling Exploration of the Ryan Lode Properties, Fairbanks Mining District, Alaska.

Rotary Drilling Exploration of the Ryan Lode Properties, Fairbanks Mining District, Alaska.
PB211433

Publication Date	1972
Personal Author	Warfield, R. S.; Thomas, B. I.
Page Count	34
Abstract	A rotary-drilling exploration system was tested at the Ryan Lode, Fairbanks mining District, Alaska, to determine its application as a substitute for a surface trenching and to evaluate the open-pit mining potential of a wide shear zone that contains gold-bearing gold-quartz veins. The drilling sampling system was verified as a practical substitute for surface trenching that minimized environmental damage but where tested, the shear zone material does not contain sufficient values, together with individual vein values, for open-pit mining. (Author)
Keywords	Rotary drilling Mineral deposits Evaluation Gold Rotary drills Stratigraphy Formations Trenching Environmental engineering Feasibility Open pit mining Alaska Ryan lode properties Fairbanks(Alaska)
Source Agency	Invalid Source Agency Code
NTIS Subject Category	48A - Mineral Industries
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Supplemental Notes	Report on Drilling Exploration, 1969-70.
Document Type	Technical Report
Title Note	Open file rept.
NTIS Issue Number	197220