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ROYCE & ASSOCIATES LP
> PDRT
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 09/30/2008 | PARTICLE DRILLING TECHNOLOGIES INC/NV | PDRT | 1,512 | 1,512 | 302 | 302 | $0.20 |
| 06/30/2008 | PARTICLE DRILLING TECHNOLOGIES INC/NV | PDRT | 984,680 | 984,680 | 2,462,000 | 2,462,000 | $2.50 |
| 03/31/2008 | PARTICLE DRILLING TECHNOLOGIES INC/NV | PDRT | 886,400 | 886,400 | 1,720,000 | 1,720,000 | $1.94 |
| 12/31/2007 | PARTICLE DRILLING TECHNOLOGIES INC/NV | PDRT | 947,900 | 947,900 | 2,446,000 | 2,446,000 | $2.58 |
| 09/30/2007 | PARTICLE DRILLING TECHNOLOGIES INC/NV | PDRT | 947,900 | 947,900 | 3,128,000 | 3,128,000 | $3.30 |
| 06/30/2007 | PARTICLE DRILLING TECHNOLOGIES INC/NV | PDRT | 947,900 | 947,900 | 2,085,000 | 2,085,000 | $2.20 |
| 03/31/2007 | PARTICLE DRILLING TECHNOLOGIES INC/NV | PDRT | 807,900 | 807,900 | 3,191,000 | 3,191,000 | $3.95 |
| 12/31/2006 | PARTICLE DRILLING TECHNOLOGIES INC/NV | PDRT | 807,900 | 807,900 | 3,458,000 | 3,458,000 | $4.28 |
| 09/30/2006 | PARTICLE DRILLING TECHNOLOGIES INC/NV | PDRT | 807,900 | 807,900 | 2,092,000 | 2,092,000 | $2.59 |
| 06/30/2006 | PARTICLE DRILLING TECHNOLOGIES INC/NV | PDRT | 667,900 | 667,900 | 2,351,000 | 2,351,000 | $3.52 |
| 03/31/2006 | PARTICLE DRILLING TECHNOLOGIES INC/NV | PDRT | 587,900 | 587,900 | 3,151,000 | 3,151,000 | $5.36 |
| 12/31/2005 | PARTICLE DRILLING TECHNOLOGIES INC/NV | PDRT | 567,900 | 567,900 | 2,782,000 | 2,782,000 | $4.90 |
| 09/30/2005 | PARTICLE DRILLING TECHNOLOGIES INC/NV | PDRT | 260,900 | 260,900 | 1,179,000 | 1,179,000 | $4.52 |
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