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Penn States Visible Emissions Training Program, also known as Smoke School, offers opacity training for people who want to become certified smoke readers.Read more
by K Randolph 1993 Cited by 3 The accumulated elapsed time on this stopwatch is the total time emissions were visible during the observation period, i.e., the emission time. 5.4.1Read more
3 days ago 26.20 is an upcoming minor update for Bedrock Edition with no set release date, which fixes some bugs.