# Relationship history for MSHA mine 1512832

Current hierarchy: **Horizon Natural Resources Incorporated → Addington Inc → River Dock #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

- **controller_controls_mine:** Thomas E  Green → River Dock #2; 1979-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pilgrim Terminals Inc → River Dock #2; 1981-04-01 to 1981-07-20; source msha-controller-operator-history
- **controller_controls_mine:** Pilgrim Petroleum Inc → River Dock #2; 1981-04-01 to 1981-07-20; source msha-controller-operator-history
- **controller_controls_operator:** Pilgrim Petroleum Inc → Pilgrim Terminals Inc; 1981-04-01 to 1981-07-20; source msha-controller-operator-history
- **operator_operates_mine:** Green Construction Of Indiana Inc → River Dock #2; 1981-07-21 to 1987-06-23; source msha-controller-operator-history
- **controller_controls_operator:** Thomas E  Green → Green Construction Of Indiana Inc; 1981-07-21 to 1987-06-23; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Natural Resources Incorporated → River Dock #2; 1983-08-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Addington Inc → River Dock #2; 1987-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Addington Inc; 1987-06-24 to current/open; source msha-controller-operator-history