First, the extinguisher valve is removed and the threads and interior of the cylinder are checked for corrosion, pitting, and any other abnormalities. [29 CFR 1910.157(f)(3)] If the cylinder passes the visual inspection, it is placed into a steel chamber, which is then filled with water at normal pressure.
Updated April 17, 2017. The earliest dated printed book known is the Diamond Sutra, printed in China in 868 CE. However, it is suspected that book printing may have occurred long before this date. In 1041, movable clay type was first invented in China.
In October, 1953, Billyâs first major book, âPeace With God,â was published and became an immediate best seller but was topped by a later book, âHow to be Born Again.â Published in 1977, âHow to be Born Againâ had the largest first printing in publishing history with 800,000 copies.