Assertion: apparatus | /r/ObjectUse | used under operational conditions
Facets:
value: by alexander lambert
type: OTHER
value: in 1880
type: TEMPORAL
Source sentences:
text: His apparatus was first used under operational conditions in 1880 by Alexander Lambert, the lead diver on the Severn Tunnel construction project, who was able to travel 1000 feet in the darkness to close several submerged sluice doors in the tunnel; this had defeated his best efforts with standard diving dress due to the danger of the air supply hose becoming fouled on submerged debris, and the strong water currents in the workings.