Exploration
Series: Technical note / Bureau of Land Management, U.S. Department of the Interior -- 70; BLM technical note -- 70; Technical note (United States. Bureau of Land Management) -- 70.; BLM technical note -- 70.
Publisher: U.S. Department of the Interior, Bureau of Land Management, Portland Service Center
Published: 1970
Place of publication: Portland, Or
Language: eng
Subjects: United States; Copper ores; Porphyry; Igneous rocks; United States. Bureau of Land Management; Mines and mineral resources; Records and correspondence; Analysis
Other titles: Exploration :; Exploration :; Mining engineering (October 1967).
Description: Contains a table from Mining Engineering, October 1967 issue, titled 'Main Activities and Methods During Four States of Exploration in Search for Porphyry Copper Deposit in Southwestern U.S.'
Notes: Caption title.

"Filing code: 3000."

"Date issued: June 1970."

"Mailing list 2."

"TN 70"--Assumed.

Includes bibliographical references.