[Newspaper]
Publication: Daily Evening Bulletin
San Francisco, CA, United States
vol. 65, no. 116, p. 3, col. 3
Glass Manufacture.
NEW YORK, Feb. 22 - The Ellenville Glass and Sand Company has successfully experimented in grinding granite, and the result promises to revolutionize part of the glass-making business. Heretofore a certain kind of sand has been necessary for making glass, but the experiments made show that granite is a good substitute. The stones to be used as bed-plates to grind the flinty granite to powder weigh over fifteen tons each.
