Parent Directory| Name | Size | Last Modified |
|---|---|---|
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| 0001410578-22-000735-index.html | 2022-03-31 13:14:52 | |
| 0001410578-22-000735.txt | 2022-03-31 13:14:52 | |
 0001410578-22-000735-xbrl.zip | 297619 | 2022-03-31 13:14:52 |
| FilingSummary.xml | 23707 | 2022-03-31 13:14:52 |
| Financial_Report.xlsx | 69563 | 2022-03-31 13:14:52 |
| MetaLinks.json | 423677 | 2022-03-31 13:14:52 |
| mtal-20211231.xsd | 49827 | 2022-03-31 13:14:52 |
| mtal-20211231x10k.htm | 1412778 | 2022-03-31 13:14:52 |
| mtal-20211231x10k_htm.xml | 522055 | 2022-03-31 13:14:52 |
| mtal-20211231xex31d1.htm | 15021 | 2022-03-31 13:14:52 |
| mtal-20211231xex31d2.htm | 15317 | 2022-03-31 13:14:52 |
| mtal-20211231xex32d1.htm | 6116 | 2022-03-31 13:14:52 |
| mtal-20211231xex32d2.htm | 6090 | 2022-03-31 13:14:52 |
| mtal-20211231xex4d5.htm | 228964 | 2022-03-31 13:14:52 |
| mtal-20211231_cal.xml | 23306 | 2022-03-31 13:14:52 |
| mtal-20211231_def.xml | 218779 | 2022-03-31 13:14:52 |
| mtal-20211231_lab.xml | 355356 | 2022-03-31 13:14:52 |
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| R1.htm | 79435 | 2022-03-31 13:14:52 |
| R10.htm | 57592 | 2022-03-31 13:14:52 |
| R11.htm | 19251 | 2022-03-31 13:14:52 |
| R12.htm | 6079 | 2022-03-31 13:14:52 |
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| R17.htm | 7634 | 2022-03-31 13:14:52 |
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| R19.htm | 34704 | 2022-03-31 13:14:52 |
| R2.htm | 78725 | 2022-03-31 13:14:52 |
| R20.htm | 57323 | 2022-03-31 13:14:52 |
| R21.htm | 116506 | 2022-03-31 13:14:52 |
| R22.htm | 43174 | 2022-03-31 13:14:52 |
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| R26.htm | 25155 | 2022-03-31 13:14:52 |
| R27.htm | 39893 | 2022-03-31 13:14:52 |
| R28.htm | 20526 | 2022-03-31 13:14:52 |
| R29.htm | 18883 | 2022-03-31 13:14:52 |
| R3.htm | 29422 | 2022-03-31 13:14:52 |
| R30.htm | 18245 | 2022-03-31 13:14:52 |
| R31.htm | 13952 | 2022-03-31 13:14:52 |
| R32.htm | 14411 | 2022-03-31 13:14:52 |
| R33.htm | 20315 | 2022-03-31 13:14:52 |
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| R37.htm | 17773 | 2022-03-31 13:14:52 |
| R4.htm | 53713 | 2022-03-31 13:14:52 |
| R5.htm | 36776 | 2022-03-31 13:14:52 |
| R6.htm | 4309 | 2022-03-31 13:14:52 |
| R7.htm | 68786 | 2022-03-31 13:14:52 |
| R8.htm | 3924 | 2022-03-31 13:14:52 |
| R9.htm | 31978 | 2022-03-31 13:14:52 |
| report.css | 2767 | 2022-03-31 13:14:52 |
| Show.js | 1085 | 2022-03-31 13:14:52 |