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| 0000788965-18-000039-index.html | 2018-11-06 18:00:59 | |
| 0000788965-18-000039.txt | 2018-11-06 18:00:59 | |
| hnrg-20181105x8k.htm | 29575 | 2018-11-06 18:00:59 |
 hnrg-20181105x8kg001.jpg | 3943 | 2018-11-06 18:00:59 |
 hnrg-20181105x8kg002.jpg | 4119 | 2018-11-06 18:00:59 |
| hnrg-20181105xex99_1.htm | 78096 | 2018-11-06 18:00:59 |