# Relationship history for MSHA mine 3608253

Current hierarchy: **Hofrichter Thomas R → Avella Mining Inc → Avella Mine #1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Mosser Morgan H → Avella Mine #1; 1990-04-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Morgan Energy Company → Avella Mine #1; 1991-05-01 to 1992-12-20; source msha-controller-operator-history
- **controller_controls_operator:** Mosser Morgan H → Morgan Energy Company; 1991-05-01 to 1992-12-20; source msha-controller-operator-history
- **operator_operates_mine:** Avella Resources Inc → Avella Mine #1; 1992-12-21 to 1993-01-24; source msha-controller-operator-history
- **controller_controls_mine:** Baillie George → Avella Mine #1; 1992-12-21 to 1993-01-24; source msha-controller-operator-history
- **controller_controls_operator:** Baillie George → Avella Resources Inc; 1992-12-21 to 1993-01-24; source msha-controller-operator-history
- **operator_operates_mine:** Avella Resources Inc → Avella Mine #1; 1993-01-25 to 1994-04-26; source msha-controller-operator-history
- **controller_controls_mine:** Mc Kee John C Jr → Avella Mine #1; 1993-01-25 to 1994-04-26; source msha-controller-operator-history
- **controller_controls_operator:** Mc Kee John C Jr → Avella Resources Inc; 1993-01-25 to 1994-04-26; source msha-controller-operator-history
- **operator_operates_mine:** Avella Mining Inc → Avella Mine #1; 1994-04-27 to 1994-08-14; source msha-controller-operator-history
- **controller_controls_mine:** Knecht Thomas → Avella Mine #1; 1994-04-27 to 1994-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Knecht Thomas → Avella Mining Inc; 1994-04-27 to 1994-08-14; source msha-controller-operator-history
- **operator_operates_mine:** Avella Mining Inc → Avella Mine #1; 1994-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hofrichter Thomas R → Avella Mine #1; 1994-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hofrichter Thomas R → Avella Mining Inc; 1994-08-15 to current/open; source msha-controller-operator-history