# Relationship history for MSHA mine 4606723

Current hierarchy: **Kelley Charles C → M K M Coal Company Inc → Surface No 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Kelley Charles C Et Al → Surface No 1; 1983-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Archie B Coal Company Inc → Surface No 1; 1983-12-01 to 1984-07-11; source msha-controller-operator-history
- **controller_controls_mine:** Smith Robert L → Surface No 1; 1983-12-01 to 1984-07-11; source msha-controller-operator-history
- **controller_controls_operator:** Smith Robert L → Archie B Coal Company Inc; 1983-12-01 to 1984-07-11; source msha-controller-operator-history
- **operator_operates_mine:** Woodlawn Energy Corp → Surface No 1; 1984-07-12 to 1986-07-07; source msha-controller-operator-history
- **controller_controls_mine:** Harris Sam → Surface No 1; 1984-07-12 to 1986-07-07; source msha-controller-operator-history
- **controller_controls_operator:** Harris Sam → Woodlawn Energy Corp; 1984-07-12 to 1986-07-07; source msha-controller-operator-history
- **operator_operates_mine:** Mc Clure Excavating Inc → Surface No 1; 1986-07-08 to 1987-04-26; source msha-controller-operator-history
- **controller_controls_mine:** Mc Clure Charles → Surface No 1; 1986-07-08 to 1987-04-26; source msha-controller-operator-history
- **controller_controls_operator:** Mc Clure Charles → Mc Clure Excavating Inc; 1986-07-08 to 1987-04-26; source msha-controller-operator-history
- **operator_operates_mine:** Sundance Energy Inc → Surface No 1; 1987-04-27 to 1989-02-13; source msha-controller-operator-history
- **controller_controls_mine:** Jones Ernest R → Surface No 1; 1987-04-27 to 1989-02-13; source msha-controller-operator-history
- **controller_controls_operator:** Jones Ernest R → Sundance Energy Inc; 1987-04-27 to 1989-02-13; source msha-controller-operator-history
- **operator_operates_mine:** M K M Coal Company Inc → Surface No 1; 1989-02-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kelley Charles C Et Al → M K M Coal Company Inc; 1989-02-14 to current/open; source msha-controller-operator-history