Dangers of purging gas piping into buildings
Series: Safety bulletin -- no. 2009-12-I-NC; Safety bulletin (United States. Chemical Safety and Hazard Investigation Board) -- no. 2009-12-I-NC.
Publisher: U.S. Chemical Safety and Hazard Investigation Board
Published: 2009
Place of publication: [Washington, D.C.]
Language: eng
Subjects: Gas-pipes; Cleaning; Accidents
Notes: "September 2009."

Title from title screen (viewed on Sept. 18, 2014).

Includes bibliographical references.