Lucifer Furnaces, Inc., Warrington, PA, has released a 2-p brochure describing its line of removable atmosphere muffle (RAM) furnaces. By employing a cart-mounted portable retort, the furnaces are efficient for heat treating and cooling under protective atmosphere. The brochure describes standard features, available options and benefits. Also included is a specification chart that details overall size, chamber size, power requirements, and weight for each of the eight models.