| | VALIDATION/CORRELATION OF A FINITE ELEMENT MODEL OF ALONGWALL CUTTING DRUM | NAVCON ENGINEERING NETWORK | $5,000 | CENTERS FOR DISEASE CONTROL AND PREVENTION | CENTERS FOR DISEASE CONTROL AND PREVENTION | — | 541620Environmental Consulting Services | AV35 | Aug 31, 2011 | Aug 31, 2011 | Nov 1, 2011 |
| | MACHINE/FABRICATION OF CUTTING DRUM TO INCREASE, IMPROVEMT OF STIFFNESS OF HELICAL VANES. | ARC WELD INC | $6,000 | CENTERS FOR DISEASE CONTROL AND PREVENTION | CENTERS FOR DISEASE CONTROL AND PREVENTION | — | 213114Support Activities for Metal Mining | AV35 | Jun 16, 2011 | Jun 16, 2011 | Aug 29, 2011 |
| | 20 SETS OF INNER AND OUTER MEMBERS FOR 1" BIT ISOLATOR. | ARC WELD INC | $5,820 | CENTERS FOR DISEASE CONTROL AND PREVENTION | CENTERS FOR DISEASE CONTROL AND PREVENTION | — | 213114Support Activities for Metal Mining | AV35 | Jun 15, 2011 | Jun 14, 2011 | Sep 25, 2011 |
| | TAS::75 0943::TAS 10-34481, 00HCCMBD-2010-83586 - MALLETT TECH VIB SCRN 5/10 | MALLETT TECHNOLOGY, INCORPORATED | $0 | Centers for Disease Control and Prevention | Centers for Disease Control and Prevention | — | 541330Engineering Services | AV35 | Jun 1, 2010 | May 28, 2010 | Aug 28, 2010 |
| | BIGHORN NF - COPPER CREEK CRUSHING | ALL B EXCAVATING CO | $65,850 | FOREST SERVICE | FOREST SERVICE | — | 212311Dimension Stone Mining and Quarrying | AV35 | Jul 17, 2009 | Jul 17, 2009 | Jan 11, 2011 |
| | 09-28566, 00HCCMBD-2009-65508, FLIGHT BAR MDLING, MALLETT 12/08 | MALLETT TECHNOLOGY, INCORPORATED | $4,800 | CENTERS FOR DISEASE CONTROL AND PREVENTION | CENTERS FOR DISEASE CONTROL AND PREVENTION | — | 541330Engineering Services | AV35 | Dec 16, 2008 | Dec 15, 2008 | Jan 15, 2009 |
| | — | TRUSTEES OF THE COLORADO SCHOOL OF MINES | $0 | BUREAU OF MINES | — | — | — | AV35 | Jun 15, 1993 | Jun 15, 1993 | Apr 15, 1986 |
| | — | TRUSTEES OF THE COLORADO SCHOOL OF MINES | $0 | BUREAU OF MINES | — | — | — | AV35 | Jun 15, 1992 | Jun 15, 1992 | — |