Assertion: black powder | /r/HasProperty | manufactured by pyrotechnician
Facets:
Source sentences:
text: The current standard composition for the black powders that are manufactured by pyrotechnicians was adopted as long ago as 1780.
text: The current standard composition for the black powders that are manufactured by pyrotechnicians was adopted as long ago as 1780.
text: The current standard for black powder manufactured by pyrotechnicians today is 75% potassium nitrate, 15% softwood charcoal and 10% sulfur; it appears to have been adopted as far back as 1780.
text: The current standard composition for the black powders that are manufactured by pyrotechnicians was adopted as long ago as 1780.
text: The current standard composition for the black powders that are manufactured by pyrotechnicians was adopted as long ago as 1780.
text: The current standard composition for the black powders that are manufactured by pyrotechnicians was adopted as long ago as 1780.
text: The current standard composition for the black powders that are manufactured by pyrotechnicians was adopted as long ago as 1780.