Document Format Files
| Seq | Description | Document | Type | Size |
|---|---|---|---|---|
| 1 | 10-K | btu-20251231.htm iXBRL | 10-K | 4190493 |
| 2 | EX-10.65 | btu_20251231xex1065.htm | EX-10.65 | 161845 |
| 3 | EX-10.66 | btu_20251231xex1066.htm | EX-10.66 | 98359 |
| 4 | EX-10.67 | btu_20251231xex1067.htm | EX-10.67 | 101663 |
| 5 | EX-10.68 | btu_20251231xex1068.htm | EX-10.68 | 156054 |
| 6 | EX-10.69 | btu_20251231xex1069.htm | EX-10.69 | 98233 |
| 7 | EX-10.70 | btu_20251231xex1070.htm | EX-10.70 | 99408 |
| 8 | EX-21 | btu_20251231xex21.htm | EX-21 | 105741 |
| 9 | EX-23.1 | btu_20251231xex231.htm | EX-23.1 | 3428 |
| 10 | EX-23.2 | btu_20251231xex232.htm | EX-23.2 | 28356 |
| 11 | EX-23.3 | btu_20251231xex233.htm | EX-23.3 | 28503 |
| 12 | EX-23.4 | btu_20251231xex234.htm | EX-23.4 | 25989 |
| 13 | EX-31.1 | btu_20251231xex311.htm | EX-31.1 | 9828 |
| 14 | EX-31.2 | btu_20251231xex312.htm | EX-31.2 | 9864 |
| 15 | EX-32.1 | btu_20251231xex321.htm | EX-32.1 | 4872 |
| 16 | EX-32.2 | btu_20251231xex322.htm | EX-32.2 | 4849 |
| 17 | EX-95 | btu_20251231xex95.htm | EX-95 | 123321 |
| 18 | EX-96.2 | btu_20251231xex962.htm | EX-96.2 | 1359179 |
| 24 | btu-20251231_g1.jpg | GRAPHIC | 195073 | |
| 25 | btu-20251231_g2.jpg | GRAPHIC | 1790576 | |
| 26 | btu-20251231_g3.jpg | GRAPHIC | 2193500 | |
| 27 | btu-20251231_g4.jpg | GRAPHIC | 51055 | |
| 28 | equation1.jpg | GRAPHIC | 27643 | |
| 29 | figure1.jpg | GRAPHIC | 47568 | |
| 30 | figure10resize.jpg | GRAPHIC | 98065 | |
| 31 | figure11.jpg | GRAPHIC | 67605 | |
| 32 | figure12resize.jpg | GRAPHIC | 96637 | |
| 33 | figure13resize.jpg | GRAPHIC | 94866 | |
| 34 | figure14resize.jpg | GRAPHIC | 98144 | |
| 35 | figure15.jpg | GRAPHIC | 52995 | |
| 36 | figure16.jpg | GRAPHIC | 43588 | |
| 37 | figure17.jpg | GRAPHIC | 53066 | |
| 38 | figure18.jpg | GRAPHIC | 38848 | |
| 39 | figure19.jpg | GRAPHIC | 52672 | |
| 40 | figure20.jpg | GRAPHIC | 60505 | |
| 41 | figure21.jpg | GRAPHIC | 44823 | |
| 42 | figure22.jpg | GRAPHIC | 53610 | |
| 43 | figure23.jpg | GRAPHIC | 57975 | |
| 44 | figure24.jpg | GRAPHIC | 59886 | |
| 45 | figure25.jpg | GRAPHIC | 62690 | |
| 46 | figure26.jpg | GRAPHIC | 57094 | |
| 47 | figure27.jpg | GRAPHIC | 61503 | |
| 48 | figure28resize.jpg | GRAPHIC | 95258 | |
| 49 | figure29resize.jpg | GRAPHIC | 98970 | |
| 50 | figure2resize.jpg | GRAPHIC | 93698 | |
| 51 | figure30resize.jpg | GRAPHIC | 96321 | |
| 52 | figure31resize.jpg | GRAPHIC | 98148 | |
| 53 | figure32resize.jpg | GRAPHIC | 97444 | |
| 54 | figure33resize.jpg | GRAPHIC | 96088 | |
| 55 | figure34resize.jpg | GRAPHIC | 96306 | |
| 56 | figure35resize.jpg | GRAPHIC | 97884 | |
| 57 | figure36resizea.jpg | GRAPHIC | 98095 | |
| 58 | figure37resizea.jpg | GRAPHIC | 97455 | |
| 59 | figure38resize.jpg | GRAPHIC | 95245 | |
| 60 | figure39resize.jpg | GRAPHIC | 98201 | |
| 61 | figure4.jpg | GRAPHIC | 44436 | |
| 62 | figure40.jpg | GRAPHIC | 54603 | |
| 63 | figure41resize.jpg | GRAPHIC | 98003 | |
| 64 | figure42.jpg | GRAPHIC | 50426 | |
| 65 | figure43.jpg | GRAPHIC | 53237 | |
| 66 | figure44resize.jpg | GRAPHIC | 95525 | |
| 67 | figure45resize.jpg | GRAPHIC | 95055 | |
| 68 | figure46.jpg | GRAPHIC | 65435 | |
| 69 | figure47.jpg | GRAPHIC | 64597 | |
| 70 | figure48.jpg | GRAPHIC | 52623 | |
| 71 | figure49.jpg | GRAPHIC | 8125 | |
| 72 | figure5.jpg | GRAPHIC | 36658 | |
| 73 | figure50.jpg | GRAPHIC | 57100 | |
| 74 | figure51resize.jpg | GRAPHIC | 88513 | |
| 75 | figure6resize.jpg | GRAPHIC | 95778 | |
| 76 | figure7.jpg | GRAPHIC | 52400 | |
| 77 | figure8and91.jpg | GRAPHIC | 46848 | |
| 78 | figure9resize.jpg | GRAPHIC | 91332 | |
| 79 | image_0.jpg | GRAPHIC | 89284 | |
| 80 | image_5.jpg | GRAPHIC | 1619402 | |
| 81 | image_6a.jpg | GRAPHIC | 97 | |
| 82 | scottsignature.jpg | GRAPHIC | 9183 | |
| 83 | scottsignature10.jpg | GRAPHIC | 9183 | |
| 84 | scottsignature2.jpg | GRAPHIC | 9183 | |
| 85 | scottsignature4.jpg | GRAPHIC | 9183 | |
| 86 | scottsignature6.jpg | GRAPHIC | 9183 | |
| 87 | scottsignature8.jpg | GRAPHIC | 9183 | |
| 88 | table17.jpg | GRAPHIC | 67830 | |
| 89 | table26.jpg | GRAPHIC | 21868 | |
| 90 | table28.jpg | GRAPHIC | 55868 | |
| 91 | table29-insertfirst.jpg | GRAPHIC | 84876 | |
| 92 | table29.jpg | GRAPHIC | 76008 | |
| 93 | table32.jpg | GRAPHIC | 11243 | |
| 94 | table3resize.jpg | GRAPHIC | 97963 | |
| 95 | table8.jpg | GRAPHIC | 69556 | |
| Complete submission text file | 0001064728-26-000006.txt | 39043919 |
Data Files
| Seq | Description | Document | Type | Size |
|---|---|---|---|---|
| 19 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | btu-20251231.xsd | EX-101.SCH | 138458 |
| 20 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | btu-20251231_cal.xml | EX-101.CAL | 166718 |
| 21 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | btu-20251231_def.xml | EX-101.DEF | 763847 |
| 22 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | btu-20251231_lab.xml | EX-101.LAB | 1427867 |
| 23 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | btu-20251231_pre.xml | EX-101.PRE | 1129594 |
| 212 | EXTRACTED XBRL INSTANCE DOCUMENT | btu-20251231_htm.xml | XML | 3069326 |
EIN.: 134004153 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-16463 | Film No.: 26655084
SIC: 1221 Bituminous Coal & Lignite Surface Mining
(CF Office: 01 Energy & Transportation)
