22 results
8-K
EX-99.1
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4 Aug 23
Alpha Announces Second Quarter 2023 Financial Results
7:32am
8-K
EX-99.1
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23 Jun 23
Alpha Announces Operational Updates
4:21pm
8-K
EX-10.1
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17 Nov 20
Contura Signs Agreement to Divest Cumberland Mine, Pennsylvania Assets
4:16pm
10-K
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1 Apr 19
Annual report
6:41am
424B3
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16 Oct 18
Prospectus supplement
5:28pm