A " large quantity of powder" and a "large quantity of explosives" are completely different things in the same way that "combustion" is different from "explosion".
The issue here is freedom and it is not based my judgement or yours. Mr. Eroh as an American citizen is entitled to make certain decisions for himself regardless of whether you or I agree with him. Until just recently, we did not have the Good Housekeeping Compliance Patrol, but now they apparently are gaining status and the fact that Eroh apparently failed his first inspection allowed the confiscation of his property.
UNTIL IT'S OVER!