Assertion: projector's range | /r/ObjectUse | used at the battle of messines
Facets:
value: in june
type: TEMPORAL
Source sentences:
text: Z Company rapidly developed the Livens Projector, increasing its range to 350 yd (320 m) and eventually an electrically triggered version with a range of 1,300 yd (1,200 m) used at the Battle of Messines in June 1917.