Assertion: gunpowder | /r/MadeOf | one central hole
Facets:
value: recently
type: TEMPORAL
Source sentences:
text: It has since been adopted in Germany for use in all heavy rifled ordnance; for the very largest guns, such as Krupp's 70-ton gun, this powder has been recently made with one central hole, having a higher density (1'78) than the original seven-hole prisms, which were about 1'68; the external dimensions are the same, 1 inch high by 1'36 in diameter.