Safety appliances approved by the Industrial Board
Subtitle: boiler appliances
By: Commonwealth of Pennsylvania, Department of Labor and Industry
Contributors: Connelly, Clifford B.
Series: Safety appliances approved by the Industrial Board -- no.1.
Publisher: The Board
Published: 1920
Place of publication: Harrisburg, Pa
Language: eng
Number of pages: 33
Subjects: Industrial safety; Directories; Boilers; Labor; Equipment; Prevention; Accidents; Manufactures
Notes: At head of title: Commonwealth of Pennsylvania, Dept. of Labor and Industry, Clifford B. Connelly, Commissioner.