Southwestern Materials, Inc
| Business category 1 | Non-Metallic Mineral Deposit |
| City ( of main office ) | Washington, D. C., US, United States |
| Address | PO Box 1270 Manchaca, Texas 78652 |
| Phones | 1-1-888-600-6077 |
| Web site | www.southwesternmaterials.com |
| Date | 2011 Oct 29, 00:10 |