Final report
Subtitle: Portal Project, Phase 3, Jefferson County, Montana : P.R. 2240-G
By: prepared by L.C. Hanson Company ; project inspector, Robert Ross
Publisher: The Company
Published: 1987
Place of publication: Helena, Mont
Language: eng
Subjects: Mine shafts; Abandoned mines; Mine filling; Abandoned mined lands reclamation
Other titles: Portal Project, Phase 3, Jefferson County, Montana
Notes: "January, 1987."

"Prepared for: Mr. Richard Juntunen, Chief Abandoned Mine Reclamation Bureau, Department of State Lands ..."