A recording system using a pegboard to increase daily productivity with transactions; also referred to a one-write system.
The inhalation of mercury vapor can produce harmful effects on the nervous, digestive and immune systems, lungs and kidneys, and may be fatal. Mild, sub-clinical signs of central nervous system toxicity can be seen in workers exposed to an elemental mercury level in the air of 20 μg/m3 or more for several years.
The answer is 640 ounces in a 5.0 gallon container
