# Relationship history for MSHA mine 1507772

Current hierarchy: **Louisiana Land & Exploration Company → Sun Fire Coal Company → Sun Fire Mine No 3**

- 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:** L L & K Coal Company Inc → Sun Fire Mine No 3; 1974-01-01 to 1975-02-26; source msha-controller-operator-history
- **controller_controls_mine:** Lewis Edward & Stephen Et Al → Sun Fire Mine No 3; 1974-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lewis Edward & Stephen Et Al → L L & K Coal Company Inc; 1974-01-01 to 1975-02-26; source msha-controller-operator-history
- **operator_operates_mine:** Mason Creek Coal & Energy Inc → Sun Fire Mine No 3; 1975-02-27 to 1976-05-02; source msha-controller-operator-history
- **controller_controls_mine:** Van Housier Don → Sun Fire Mine No 3; 1975-02-27 to 1976-05-02; source msha-controller-operator-history
- **controller_controls_operator:** Van Housier Don → Mason Creek Coal & Energy Inc; 1975-02-27 to 1976-05-02; source msha-controller-operator-history
- **operator_operates_mine:** L L & K Coal Company Inc → Sun Fire Mine No 3; 1976-05-03 to 1980-01-02; source msha-controller-operator-history
- **controller_controls_operator:** Lewis Edward & Stephen Et Al → L L & K Coal Company Inc; 1976-05-03 to 1980-01-02; source msha-controller-operator-history
- **controller_controls_mine:** Louisiana Land & Exploration Company → Sun Fire Mine No 3; 1977-08-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sun Fire Coal Company → Sun Fire Mine No 3; 1980-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Louisiana Land & Exploration Company → Sun Fire Coal Company; 1980-01-03 to current/open; source msha-controller-operator-history