TY - RPRT TI - Experimental investigations regarding the use of sand as an inhibitor of air convection in deep seismic boreholes AU - L. Gary Holcomb AU - Leo Sandoval AU - Bob Hutt PY - 1998 DO - 10.3133/ofr98362 UR - https://pubs.usgs.gov/publication/ofr98362 ID - ofr98362 ER -