# Relationship history for MSHA mine 1517448

Current hierarchy: **Hackney Mark A → Circle H Coal Inc → 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:** Justus Donald Et Al → Mine #1; 1992-04-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Quad Mining Company Inc → Mine #1; 1993-09-01 to 1994-11-28; source msha-controller-operator-history
- **controller_controls_operator:** Justus Donald Et Al → Quad Mining Company Inc; 1993-09-01 to 1994-11-28; source msha-controller-operator-history
- **controller_controls_mine:** Amon L  Mahon → Mine #1; 1994-11-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Desert Mining Inc → Mine #1; 1994-11-29 to 1995-06-18; source msha-controller-operator-history
- **controller_controls_mine:** Roger  Coleman → Mine #1; 1994-11-29 to 1995-06-18; source msha-controller-operator-history
- **controller_controls_operator:** Roger  Coleman → Desert Mining Inc; 1994-11-29 to 1995-06-18; source msha-controller-operator-history
- **controller_controls_mine:** Tim  McDonald → Mine #1; 1995-05-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peters Johnny → Mine #1; 1995-06-14 to 1996-07-01; source msha-controller-operator-history
- **operator_operates_mine:** Ho-Jo Coal Inc → Mine #1; 1995-06-19 to 1996-02-11; source msha-controller-operator-history
- **controller_controls_operator:** Tim  McDonald → Ho-Jo Coal Inc; 1995-06-19 to 1996-02-11; source msha-controller-operator-history
- **operator_operates_mine:** Shawna Lea Coal Company Inc → Mine #1; 1996-02-12 to 1996-07-01; source msha-controller-operator-history
- **controller_controls_operator:** Peters Johnny → Shawna Lea Coal Company Inc; 1996-02-12 to 1996-07-01; source msha-controller-operator-history
- **operator_operates_mine:** Island Fork Construction Ltd → Mine #1; 1996-07-02 to 1997-08-03; source msha-controller-operator-history
- **controller_controls_operator:** Amon L  Mahon → Island Fork Construction Ltd; 1996-07-02 to 1997-08-03; source msha-controller-operator-history
- **operator_operates_mine:** Circle H Coal Inc → Mine #1; 1997-08-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hackney Mark A → Mine #1; 1997-08-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hackney Mark A → Circle H Coal Inc; 1997-08-04 to current/open; source msha-controller-operator-history