# Relationship history for MSHA mine 1514194

Current hierarchy: **Elliott Layton → Big Man Coal Company Inc → #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:** Sharp James Et Al → #1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J & S Coal Company → #1; 1983-08-01 to 1985-07-16; source msha-controller-operator-history
- **controller_controls_operator:** Sharp James Et Al → J & S Coal Company; 1983-08-01 to 1985-07-16; source msha-controller-operator-history
- **operator_operates_mine:** Dale Coal Company → #1; 1985-07-17 to 1991-04-01; source msha-controller-operator-history
- **controller_controls_mine:** Taylor Mike → #1; 1985-07-17 to 1991-04-01; source msha-controller-operator-history
- **controller_controls_operator:** Taylor Mike → Dale Coal Company; 1985-07-17 to 1991-04-01; source msha-controller-operator-history
- **operator_operates_mine:** W C Coal → #1; 1991-04-02 to 1991-08-05; source msha-controller-operator-history
- **controller_controls_mine:** King Franklin--Randall Perkins Et Al → #1; 1991-04-02 to 1991-08-05; source msha-controller-operator-history
- **controller_controls_operator:** King Franklin--Randall Perkins Et Al → W C Coal; 1991-04-02 to 1991-08-05; source msha-controller-operator-history
- **operator_operates_mine:** P & G Coal Inc → #1; 1991-08-06 to 1991-08-18; source msha-controller-operator-history
- **controller_controls_mine:** Gray Perry Jr → #1; 1991-08-06 to 1991-08-18; source msha-controller-operator-history
- **controller_controls_operator:** Gray Perry Jr → P & G Coal Inc; 1991-08-06 to 1991-08-18; source msha-controller-operator-history
- **operator_operates_mine:** Big Man Coal Company Inc → #1; 1991-08-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Elliott Layton → #1; 1991-08-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elliott Layton → Big Man Coal Company Inc; 1991-08-19 to current/open; source msha-controller-operator-history