TY  - RPRT
TI  - An experiment to test hole-to-hole resistivity measurements for locating mine openings in coal seams
AU  - Jeffrey J. Daniels
AU  - James Henry Scott
PY  - 1980
DO  - 10.3133/ofr80895
UR  - https://pubs.usgs.gov/publication/ofr80895
ID  - ofr80895
ER  -