What is the proper procedure to hoist gas cylinders?

This question describes a situation where you use a crane to hoist oxygen and acetylene tanks strapped to a wheeled cart. The tanks are secured to the cart with tank clamps, not chains, which can be tightened down around both tanks.  At the top of the card there must be an arm with a closed loop to attach the rigging. OSHA requires that the regulators must be removed and valve protection caps be put on unless it is a special carrier intended for this purpose. A regular wheeled cart is not designed or intended to protect tanks from damage when moved by a crane.  The cart does not include any feature that would protect the regulators in the event they struck against an object while being hoisted.  This means the requirement that regulators are removed and value protection caps be put in place before the cylinders are moved does apply.