Assertion: gunpowder | /r/HasProperty | tumbled with graphite dust
Facets:
value: after manufacturing grains
type: TEMPORAL
value: for 12 hours
type: TEMPORAL
Source sentences:
text: In 1857 Lamont DuPont solved the main problem when using cheaper sodium nitrate formulations when he patented DuPont "B" Blasting powder; after manufacturing grains from press-cake in the usual way, the powder was tumbled with graphite dust for 12 hours, forming a coating on each grain which in this case reduced its ability to pick up moisture.
text: In 1857 Lamont DuPont solved the main problem when using cheaper sodium nitrate formulations when he patented DuPont "B" Blasting powder; after manufacturing grains from press-cake in the usual way, the powder was tumbled with graphite dust for 12 hours, forming a coating on each grain which in this case reduced its ability to pick up moisture.