Occupational exposure to radon progeny in underground mines.

Mode of access: Internet.

Underground insulated piping systems : excluding walk-in tunnels.

"Prepared under Contract No. CST 263 between the National Academy of Sciences and the National Bureau of Standards."

State-of-the-art procedures and equipment for internal inspection of underground storage tanks /

Mode of access: Internet.

Underground injection wells and your drinking water.

Mode of access: Internet.

Processes affecting subsurface transport of leaking underground tank fluids /

"CR 810052."

Musts for USTs : a summary of the new regulations for underground storage tank systems.

Mode of access: Internet.

Volumetric leak detection in large underground storage tanks /

Mode of access: Internet.

More about leaking underground storage tanks : a background booklet for the chemical advisory /

Mode of access: Internet.

Hazards and protection of underground transformer installations /

Mode of access: Internet.

Computer applications in underground mining systems : final report : prepared for Office of Coal Research, Dept. of Interior ... /

"Period of performance: September, l968- December, 1973."

Underground coal conversion : program description /

"DOE/ET-0100."

Pt. I. The exploration of Bushey Cavern near Cavetown, Maryland,

"Bibliography of Fort Ancient": p. 164.

Deep underground shock measurements /

"Issuance Date: May 24, 1965"--cover ; "December 1964"--title page

Close-in effects of an underground nuclear detonation on small mammals and selected invertebrates /

Project SEDAN.

Close-in effects of an underground nuclear detonation on vegetation

"Issued: May 1, 1963"--Cover.