Electric time-switch for closing circuits at accurately regular intervals /

Includes bibliographical references.

Simplified curve and switch work; a collection of valuable points for the supervisor and foreman and for college instruction,

Mode of access: Internet.

Standard tee rail construction for steam rail road and industrial railway track and switch work.

"Catalogue no. 21."

A Competitive assessment of the U.S. digital central office switch industry /

Item 231-B-1

Reducing and recycling mercury switch thermostats and vehicle components : a report to Governor Blagojevich and the Illinois General Assembly.

Over the last two years, Governor Blagojevich and the Illinois General Assembly have enacted a number of laws to reduce the health risks associated with the use and disposal of consumer, household and commercial products that contain mercury. These products include thermometers, switches, electrical relays and scientific instruments used in schools. The purpose of these laws is to reduce mercury releases into the environment. Mercury is a strong neurotoxin that can be harmful to the health of humans and wildlife. Mercury exposure poses a particular risk to young children and pregnant women because mercury may inhibit the development of the brain and nervous system. This report presents recommendations for improving efforts to reduce and recycle mercury components that are found in thermostats and motor vehicles. Illinois EPA prepared the report in response to Public Act 93-0964. In drafting the report, Illinois EPA conducted research on mercury reduction and recycling programs in other states, reviewed technical studies and consulted with officials in the private and public sectors.

Operator, organizational, and intermediate (direct support and general support) maintenance manual ... : switch, balanced magnetic SA-1955 ()/FSS-9(V) NSN 6350-00-228-2500.

"24 July 1974."

Laser-triggered switch study

"Technical report no. RADC-TR-66-428. Interim report."