For those of you who like to grill during the summer, here is some safety information you should be aware of and should feel free to share with other personnel. For those of you who exchange your propane tanks, this issue is something you definitely need to be aware of, especially in light of the routine news of ‘Meth-labs’ across the Commonwealth. Meth cooks are acquiring propane tanks from exchanges at retail and propane sales outlets and emptying them of the propane; then, filling them with anhydrous ammonia which may be obtained through commercial resources or produced in-house by the meth cooks. After they are no longer needed for lab use, lab operators return them to retail outlets or dispose of the container along the roadside or river bank. The tanks may then be refilled with propane and returned to the general public for purchase. Anhydrous ammonia is very corrosive and weakens the structure of the tank. It can be very dangerous when mixed with propane and then connected to a grills for use. You should inspect the propane tank for any blue or greenish residue around the valve areas. If it is present, refuse to purchase the tank. The National Propane Gas Association website may have more details.