Since 1873, Burnham Corporation, and now, Burnham LLC, doing business under the name "Burnham Commercial", has produced steam and hot water boilers for commercial and industrial applications. Located at 1239 Harrisburg Pike, in Lancaster, PA, Burnham Commercial's facilities have gone through numerous expansions and changes, since its original construction in 1921.
Vulcan Boiler and General Insurance Company, Ltd. Boiler Steel and Experience with High-Pressure Steam Boilers. 102 pp. n. d. The Company, Manchester, England. 2 sh. 6 d. About half the work is devoted to manufacture, treatment and properties of steel. org
The range of hardness for most of the shallow well waters is between 100 and 200 ppm. No treatment plants for softening were seen except those for boiler feed and special processing at industrial plants where Zeolite softeners were used.