Post Time：Oct 04,2012Classify:Industry NewsView：133
Mining sand, clay and other industrial minerals for use by industrial concerns was a solid business for over 100 years, but the explosion of unconventional drilling that has helped
US Silica is a 112-year old company that got its start supplying sand to Pennsylvania's glass industry, but around 2008 the firm began to supply proppants to companies that were
Source: http://www.glassonweb.com/news/index/17219/Author:
