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| 0001104659-22-053554-index.html | 2022-04-29 16:10:49 | |
| 0001104659-22-053554.txt | 2022-04-29 16:10:49 | |
 0001104659-22-053554-xbrl.zip | 28161 | 2022-04-29 16:10:49 |
| FilingSummary.xml | 1733 | 2022-04-29 16:10:49 |
| Financial_Report.xlsx | 5834 | 2022-04-29 16:10:49 |
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| metc-20220429.xsd | 3584 | 2022-04-29 16:10:49 |
| metc-20220429_def.xml | 27214 | 2022-04-29 16:10:49 |
| metc-20220429_lab.xml | 37290 | 2022-04-29 16:10:49 |
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| R1.htm | 46308 | 2022-04-29 16:10:49 |
| report.css | 2767 | 2022-04-29 16:10:49 |
| Show.js | 1085 | 2022-04-29 16:10:49 |
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| tm2213831d1_8k_htm.xml | 5413 | 2022-04-29 16:10:49 |
| tm2213831d1_ex99-1.htm | 14025 | 2022-04-29 16:10:49 |
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| tm2213831d1_ex99-2.htm | 39498 | 2022-04-29 16:10:49 |
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