# Relationship history for MSHA mine 4001612

Current hierarchy: **Lester Carlis → C & L Coal Company → #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:** Harris Johnny → #1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** R C Coal Company → #1; 1974-01-01 to 1977-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Collins Don → #1; 1974-01-01 to 1977-05-19; source msha-controller-operator-history
- **controller_controls_operator:** Collins Don → R C Coal Company; 1974-01-01 to 1977-05-19; source msha-controller-operator-history
- **operator_operates_mine:** Fire Creek Coal Company Of Tennessee → #1; 1977-05-20 to 1979-05-30; source msha-controller-operator-history
- **controller_controls_mine:** Real Estate West → #1; 1977-05-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Real Estate West → Fire Creek Coal Company Of Tennessee; 1977-05-20 to 1979-05-30; source msha-controller-operator-history
- **operator_operates_mine:** Chad Mining Inc → #1; 1979-05-31 to 1981-11-12; source msha-controller-operator-history
- **controller_controls_mine:** Lieberman Charles → #1; 1979-05-31 to 1981-11-12; source msha-controller-operator-history
- **controller_controls_operator:** Lieberman Charles → Chad Mining Inc; 1979-05-31 to 1981-11-12; source msha-controller-operator-history
- **controller_controls_mine:** Campbell Ernest & Neil → #1; 1980-05-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** E & N Coal Company → #1; 1981-11-13 to 1986-08-10; source msha-controller-operator-history
- **controller_controls_operator:** Campbell Ernest & Neil → E & N Coal Company; 1981-11-13 to 1986-08-10; source msha-controller-operator-history
- **operator_operates_mine:** H & W Coal Company → #1; 1986-08-11 to 1988-06-19; source msha-controller-operator-history
- **controller_controls_operator:** Harris Johnny → H & W Coal Company; 1986-08-11 to 1988-06-19; source msha-controller-operator-history
- **operator_operates_mine:** Fletcher Coal Company → #1; 1988-06-20 to 1989-05-25; source msha-controller-operator-history
- **controller_controls_mine:** Fletcher Ernest → #1; 1988-06-20 to 1989-05-25; source msha-controller-operator-history
- **controller_controls_operator:** Fletcher Ernest → Fletcher Coal Company; 1988-06-20 to 1989-05-25; source msha-controller-operator-history
- **operator_operates_mine:** C & L Coal Company → #1; 1989-05-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lester Carlis → #1; 1989-05-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lester Carlis → C & L Coal Company; 1989-05-26 to current/open; source msha-controller-operator-history