# Relationship history for MSHA mine 1510109

Current hierarchy: **Slone Carl → C O T Coal Company Inc → #1 Prep Plant**

- 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:** American Coal Processing → #1 Prep Plant; 1976-11-01 to 1981-02-16; source msha-controller-operator-history
- **controller_controls_mine:** Coons Jerry W → #1 Prep Plant; 1976-11-01 to 1981-02-16; source msha-controller-operator-history
- **controller_controls_operator:** Coons Jerry W → American Coal Processing; 1976-11-01 to 1981-02-16; source msha-controller-operator-history
- **operator_operates_mine:** Ex Coal Sales Inc → #1 Prep Plant; 1981-02-17 to 1981-11-08; source msha-controller-operator-history
- **controller_controls_mine:** Patrick James → #1 Prep Plant; 1981-02-17 to 1981-11-08; source msha-controller-operator-history
- **controller_controls_operator:** Patrick James → Ex Coal Sales Inc; 1981-02-17 to 1981-11-08; source msha-controller-operator-history
- **operator_operates_mine:** Ex Coal Sales Inc → #1 Prep Plant; 1981-11-09 to 1982-02-17; source msha-controller-operator-history
- **controller_controls_mine:** Jamestown Resources Inc → #1 Prep Plant; 1981-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jamestown Resources Inc → Ex Coal Sales Inc; 1981-11-09 to 1982-02-17; source msha-controller-operator-history
- **operator_operates_mine:** C I E Coal Company → #1 Prep Plant; 1982-02-18 to 1983-02-10; source msha-controller-operator-history
- **controller_controls_mine:** Thomas J W → #1 Prep Plant; 1982-02-18 to 1983-02-10; source msha-controller-operator-history
- **controller_controls_operator:** Thomas J W → C I E Coal Company; 1982-02-18 to 1983-02-10; source msha-controller-operator-history
- **controller_controls_mine:** Sams William B → #1 Prep Plant; 1982-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Beargrass Coal Company → #1 Prep Plant; 1983-02-11 to 1984-01-25; source msha-controller-operator-history
- **controller_controls_operator:** Sams William B → Beargrass Coal Company; 1983-02-11 to 1984-01-25; source msha-controller-operator-history
- **operator_operates_mine:** A C & S Coal Processing → #1 Prep Plant; 1984-01-26 to 1985-08-06; source msha-controller-operator-history
- **controller_controls_mine:** Stifel Art → #1 Prep Plant; 1984-01-26 to 1985-08-06; source msha-controller-operator-history
- **controller_controls_operator:** Stifel Art → A C & S Coal Processing; 1984-01-26 to 1985-08-06; source msha-controller-operator-history
- **operator_operates_mine:** C O T Coal Company Inc → #1 Prep Plant; 1985-08-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Slone Carl → #1 Prep Plant; 1985-08-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Slone Carl → C O T Coal Company Inc; 1985-08-07 to current/open; source msha-controller-operator-history