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| 0000891014-20-000021-index.html | 2020-05-01 16:08:30 | |
| 0000891014-20-000021.txt | 2020-05-01 16:08:30 | |
 0000891014-20-000021-xbrl.zip | 200172 | 2020-05-01 16:08:30 |
| ex15.htm | 2385 | 2020-05-01 16:08:30 |
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| Financial_Report.xlsx | 61322 | 2020-05-01 16:08:30 |
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| form10q_htm.xml | 906490 | 2020-05-01 16:08:30 |
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| mtx-20200329.xsd | 41514 | 2020-05-01 16:08:30 |
| mtx-20200329_cal.xml | 62725 | 2020-05-01 16:08:30 |
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| report.css | 2767 | 2020-05-01 16:08:30 |
| Show.js | 1085 | 2020-05-01 16:08:30 |