Coal exploratory drilling; a cost percentage comparison of three methods

Robert G. Hobbs

doi:10.3133/ofr791100

Skip to main content

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Coal exploratory drilling; a cost percentage comparison of three methods

Open-File Report 79-1100

By: Robert G. Hobbs

https://doi.org/10.3133/ofr791100

Links

Document: Report (pdf)
Download citation as: RIS | Dublin Core

Abstract

Additional publication details
Publication type	Report
Publication Subtype	USGS Numbered Series
Title	Coal exploratory drilling; a cost percentage comparison of three methods
Series title	Open-File Report
Series number	79-1100
DOI	10.3133/ofr791100
Edition	-
Year Published	1979
Language	ENGLISH
Publisher	U.S. Geological Survey,
Description	11 p. :graphs, ill. ;28 cm.
Google Analytic Metrics	Metrics page