Before revision: Although such rivets were normally heated in small portable coke braziers (which also used a cheaper fuel), the Well light was favoured for some final assembly work at height, as the smaller lights were considered lighter and easier to lift into place high atop a bridge.
After revision: Although such rivets were normally heated in small portable coke braziers (which also used a cheaper fuel), the Wells light was favoured for some final assembly work at height, as the smaller lights were considered lighter and easier to lift into place high atop a bridge.