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| 0000788965-20-000004-index.html | 2020-01-21 16:59:46 | |
| 0000788965-20-000004.txt | 2020-01-21 16:59:46 | |
| hnrg-20200120ex99196d629.htm | 7191 | 2020-01-21 16:59:46 |
| hnrg-20200120x8k.htm | 44311 | 2020-01-21 16:59:46 |
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