Document Format Files
Data Files
Seq | Description | Document | Type | Size |
---|---|---|---|---|
356 | EX-101.SCH | arch-20220930.xsd | EX-101.SCH | 60258 |
357 | EX-101.CAL | arch-20220930_cal.xml | EX-101.CAL | 97095 |
358 | EX-101.DEF | arch-20220930_def.xml | EX-101.DEF | 209627 |
359 | EX-101.LAB | arch-20220930_lab.xml | EX-101.LAB | 572423 |
360 | EX-101.PRE | arch-20220930_pre.xml | EX-101.PRE | 411194 |
435 | EXTRACTED XBRL INSTANCE DOCUMENT | arch-20220930x10q_htm.xml | XML | 2767050 |
IRS No.: 430921172 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-Q | Act: 34 | File No.: 001-13105 | Film No.: 221337202
SIC: 1221 Bituminous Coal & Lignite Surface Mining