Chains, Ropes, and Slings Test I Source: Questions and answers from the National Safety Council Progress Indicator: Question 3 of 20 3.  Oxygen and gas tanks, when not in use, shall be stored _________ on a section.  (Section 264) Choices: inby the last open crosscut, as long as it has been examined outby the last open crosscut on the wide side of the entry when the miner operator can see it inby the last open crosscut, as long as no equipment is energized