Comparison of rotary and in-hole motor techniques for drilling horizontal boreholes in coal /
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| Author / Creator: | Kravits, S. J. (Stephen J.) |
|---|---|
| Imprint: | [Avondale, Md.] : U.S. Dept. of the Interior, Bureau of Mines, 1985. |
| Description: | ii, 31 pages : illustrations ; 28 cm. |
| Language: | English |
| Series: | Report of investigations ; 8933 Report of investigations (United States. Bureau of Mines) ; 8933. |
| Subject: | |
| Format: | E-Resource Microform U.S. Federal Government Document Book |
| URL for this record: | http://pi.lib.uchicago.edu/1001/cat/bib/7242223 |