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."

Fifteenth census of the United States, 1930. Number of farms, farm acreage, and values of farm land and buildings, farm buildings, farmers' dwellings, and farm implements and machinery by minor civil divisions.

At head of title: U.S. Department of Commerce. R.P. Lamont, secretary. Bureau of the Census. W.M. Steuart, director.

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."

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.