# Relationship history for MSHA mine 1505360

Current hierarchy: **Jessica R  Lester → Lester Coal Company Inc → No2**

- 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

- **operator_operates_mine:** M & E Coal Company → No2; 1950-01-01 to 1977-09-05; source msha-controller-operator-history
- **controller_controls_mine:** Harris Stirl E → No2; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harris Stirl E → M & E Coal Company; 1950-01-01 to 1977-09-05; source msha-controller-operator-history
- **controller_controls_mine:** Preece Homer & George → No2; 1977-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chaffins Lionel-Bill-George Et Al → No2; 1977-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Preece Enterprises Inc → No2; 1977-09-06 to 1978-05-26; source msha-controller-operator-history
- **controller_controls_operator:** Preece Homer & George → Preece Enterprises Inc; 1977-09-06 to 1978-05-26; source msha-controller-operator-history
- **operator_operates_mine:** Elk Coal Company → No2; 1978-05-27 to 1982-04-06; source msha-controller-operator-history
- **controller_controls_operator:** Chaffins Lionel-Bill-George Et Al → Elk Coal Company; 1978-05-27 to 1982-04-06; source msha-controller-operator-history
- **controller_controls_mine:** Jessica R  Lester et al → No2; 1982-02-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lester Coal Company Inc → No2; 1982-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jessica R  Lester et al → Lester Coal Company Inc; 1982-04-07 to current/open; source msha-controller-operator-history