[Trade Journal]
Publication: Electrical Review and Western Electrician
New York, NY, United States
vol. 62, no. 2, p. 114, col. 1
Artificial Lava.
A process for making artificial lava has been invented and patented by Dr. Charles P. Steinmetz. It is made by mixing powdered mineral talc and a binder of precipitated gelatinous magnesium silicate. The mass is then molded under pressure to any desired shape and fired at a temperature about 1,000 degrees centigrade. It is an excellent insulator and has the heat-resisting properties of natural lava.