# Relationship history for MSHA mine 1102621

Current hierarchy: **Horizon Natural Resources Incorporated → Addington Enterprises Inc → Mine #2**

- 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

- **operator_operates_mine:** Classic Coal Corp → Mine #2; 1977-05-01 to 1990-04-01; source msha-controller-operator-history
- **controller_controls_mine:** Adams Resources & Energy Inc → Mine #2; 1977-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adams Resources & Energy Inc → Classic Coal Corp; 1977-05-01 to 1990-04-01; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Natural Resources Incorporated → Mine #2; 1988-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Southern Illinois Mining Company → Mine #2; 1990-04-02 to 1991-04-21; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Natural Resources Incorporated → Mine #2; 1990-04-02 to 1998-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Southern Illinois Mining Company; 1990-04-02 to 1991-04-21; source msha-controller-operator-history
- **operator_operates_mine:** Rocky Creek Mining Corp → Mine #2; 1991-04-22 to 1991-09-08; source msha-controller-operator-history
- **controller_controls_mine:** David C  Audas → Mine #2; 1991-04-22 to 1991-09-08; source msha-controller-operator-history
- **controller_controls_operator:** David C  Audas → Rocky Creek Mining Corp; 1991-04-22 to 1991-09-08; source msha-controller-operator-history
- **operator_operates_mine:** Southern Illinois Mining Company → Mine #2; 1991-09-09 to 1992-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Southern Illinois Mining Company; 1991-09-09 to 1992-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Southern Illinois Mining Co → Mine #2; 1992-07-10 to 1992-10-08; source msha-controller-operator-history
- **controller_controls_mine:** Ranier Harry Hale → Mine #2; 1992-07-10 to 1992-10-08; source msha-controller-operator-history
- **controller_controls_operator:** Ranier Harry Hale → Southern Illinois Mining Co; 1992-07-10 to 1992-10-08; source msha-controller-operator-history
- **operator_operates_mine:** Addington Enterprises Inc → Mine #2; 1992-10-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Addington Enterprises Inc; 1992-10-09 to current/open; source msha-controller-operator-history