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|---|---|---|
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| 0000950123-10-046563-index.html | 2010-05-07 17:27:48 | |
| 0000950123-10-046563.txt | 2010-05-07 17:27:48 | |
 0000950123-10-046563-xbrl.zip | 74027 | 2010-05-07 17:27:48 |
| btu-20100331.xml | 630602 | 2010-05-07 17:27:48 |
| btu-20100331.xsd | 17828 | 2010-05-07 17:27:48 |
| btu-20100331_cal.xml | 51242 | 2010-05-07 17:27:48 |
| btu-20100331_def.xml | 43654 | 2010-05-07 17:27:48 |
| btu-20100331_lab.xml | 175067 | 2010-05-07 17:27:48 |
| btu-20100331_pre.xml | 111346 | 2010-05-07 17:27:48 |
 c57452c5745200.gif | 2285 | 2010-05-07 17:27:48 |
| c57452e10vq.htm | 601251 | 2010-05-07 17:27:48 |
| c57452exv10w2.htm | 54539 | 2010-05-07 17:27:48 |
| c57452exv10w3.htm | 8021 | 2010-05-07 17:27:48 |
| c57452exv10w4.htm | 7695 | 2010-05-07 17:27:48 |
| c57452exv31w1.htm | 8338 | 2010-05-07 17:27:48 |
| c57452exv31w2.htm | 8356 | 2010-05-07 17:27:48 |
| c57452exv32w1.htm | 2938 | 2010-05-07 17:27:48 |
| c57452exv32w2.htm | 2979 | 2010-05-07 17:27:48 |
| c57452exv4w1.htm | 43260 | 2010-05-07 17:27:48 |
| defnref.xml | 28590 | 2010-05-07 17:27:48 |
| FilingSummary.xml | 15657 | 2010-05-07 17:27:48 |
| Financial_Report.xls | 107520 | 2010-05-07 17:27:48 |
| R1.xml | 54111 | 2010-05-07 17:27:48 |
| R10.xml | 9277 | 2010-05-07 17:27:48 |
| R11.xml | 25876 | 2010-05-07 17:27:48 |
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| R14.xml | 28255 | 2010-05-07 17:27:48 |
| R15.xml | 28651 | 2010-05-07 17:27:48 |
| R16.xml | 23361 | 2010-05-07 17:27:48 |
| R17.xml | 28663 | 2010-05-07 17:27:48 |
| R18.xml | 174235 | 2010-05-07 17:27:48 |
| R19.xml | 28862 | 2010-05-07 17:27:48 |
| R2.xml | 92799 | 2010-05-07 17:27:48 |
| R20.xml | 34030 | 2010-05-07 17:27:48 |
| R21.xml | 237605 | 2010-05-07 17:27:48 |
| R22.xml | 8425 | 2010-05-07 17:27:48 |
| R3.xml | 166283 | 2010-05-07 17:27:48 |
| R4.xml | 95411 | 2010-05-07 17:27:48 |
| R5.xml | 131520 | 2010-05-07 17:27:48 |
| R6.xml | 89323 | 2010-05-07 17:27:48 |
| R7.xml | 19930 | 2010-05-07 17:27:48 |
| R8.xml | 11096 | 2010-05-07 17:27:48 |
| R9.xml | 12765 | 2010-05-07 17:27:48 |