Document Format Files
| Seq | Description | Document | Type | Size |
|---|---|---|---|---|
| 1 | 10-K | btu-20211231.htm iXBRL | 10-K | 5286725 |
| 2 | EX-10.75 | btu_20211231xex1075.htm | EX-10.75 | 105162 |
| 3 | EX-10.76 | btu_20211231xex1076.htm | EX-10.76 | 144240 |
| 4 | EX-10.77 | btu_20211231xex1077.htm | EX-10.77 | 116160 |
| 5 | EX-10.78 | btu_20211231xex1078.htm | EX-10.78 | 169691 |
| 6 | EX-10.79 | btu_20211231xex1079.htm | EX-10.79 | 97764 |
| 7 | EX-10.80 | btu_20211231xex1080.htm | EX-10.80 | 149005 |
| 8 | EX-10.81 | btu_20211231xex1081.htm | EX-10.81 | 172695 |
| 9 | EX-10.89 | btu_20211231xex1089.htm | EX-10.89 | 119733 |
| 10 | EX-21 | btu_20211231xex21.htm | EX-21 | 105607 |
| 11 | EX-23.1 | btu_20211231xex231.htm | EX-23.1 | 3630 |
| 12 | EX-23.2 | btu_20211231xex232.htm | EX-23.2 | 26209 |
| 13 | EX-23.3 | btu_20211231xex233.htm | EX-23.3 | 26114 |
| 14 | EX-23.4 | btu_20211231xex234.htm | EX-23.4 | 26062 |
| 15 | EX-23.5 | btu_20211231xex235.htm | EX-23.5 | 38543 |
| 16 | EX-31.1 | btu_20211231xex311.htm | EX-31.1 | 9930 |
| 17 | EX-31.2 | btu_20211231xex312.htm | EX-31.2 | 9966 |
| 18 | EX-32.1 | btu_20211231xex321.htm | EX-32.1 | 4974 |
| 19 | EX-32.2 | btu_20211231xex322.htm | EX-32.2 | 4951 |
| 20 | EX-95 | btu_20211231xex95.htm | EX-95 | 104300 |
| 21 | EX-96.1 | btu_20211231xex961.htm | EX-96.1 | 1013492 |
| 22 | EX-96.2 | btu_20211231xex962.htm | EX-96.2 | 1153230 |
| 23 | EX-96.3 | btu_20211231xex963.htm | EX-96.3 | 1129521 |
| 24 | EX-96.4 | btu_20211231xex964.htm | EX-96.4 | 1152085 |
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| Complete submission text file | 0001064728-22-000008.txt | 111433314 |
Data Files
| Seq | Description | Document | Type | Size |
|---|---|---|---|---|
| 25 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | btu-20211231.xsd | EX-101.SCH | 131385 |
| 26 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | btu-20211231_cal.xml | EX-101.CAL | 155805 |
| 27 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | btu-20211231_def.xml | EX-101.DEF | 798851 |
| 28 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | btu-20211231_lab.xml | EX-101.LAB | 1462130 |
| 29 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | btu-20211231_pre.xml | EX-101.PRE | 1106806 |
| 375 | EXTRACTED XBRL INSTANCE DOCUMENT | btu-20211231_htm.xml | XML | 4243180 |
IRS No.: 134004153 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-16463 | Film No.: 22653370
SIC: 1221 Bituminous Coal & Lignite Surface Mining
