# Relationship history for MSHA mine 1504195

Current hierarchy: **Monroe  Jones → J C & P Coal Corp → No 2**

- 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:** Premium Elkhorn Coal Corp → No 2; 1950-01-01 to 1972-03-20; source msha-controller-operator-history
- **controller_controls_mine:** Nick A  Cooley et al → No 2; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nick A  Cooley et al → Premium Elkhorn Coal Corp; 1950-01-01 to 1972-03-20; source msha-controller-operator-history
- **controller_controls_mine:** Neds Fork Coal Company → No 2; 1950-01-01 to 1972-08-09; source msha-controller-operator-history
- **operator_operates_mine:** Neds Fork Coal Company → No 2; 1972-03-21 to 1972-08-09; source msha-controller-operator-history
- **controller_controls_operator:** Neds Fork Coal Company → Neds Fork Coal Company; 1972-03-21 to 1972-08-09; source msha-controller-operator-history
- **controller_controls_mine:** Monroe  Jones → No 2; 1972-05-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Premium Elkhorn Coal Corp → No 2; 1972-08-10 to 1975-02-07; source msha-controller-operator-history
- **controller_controls_operator:** Nick A  Cooley et al → Premium Elkhorn Coal Corp; 1972-08-10 to 1975-02-07; source msha-controller-operator-history
- **operator_operates_mine:** J C & P Coal Corp → No 2; 1975-02-08 to 1983-06-26; source msha-controller-operator-history
- **controller_controls_operator:** Monroe  Jones → J C & P Coal Corp; 1975-02-08 to 1983-06-26; source msha-controller-operator-history
- **operator_operates_mine:** Champion Coal Company Inc → No 2; 1983-06-27 to 1989-01-29; source msha-controller-operator-history
- **controller_controls_mine:** Jones Monroe Ii → No 2; 1983-06-27 to 1989-01-29; source msha-controller-operator-history
- **controller_controls_operator:** Jones Monroe Ii → Champion Coal Company Inc; 1983-06-27 to 1989-01-29; source msha-controller-operator-history
- **operator_operates_mine:** Meka Energy Inc → No 2; 1989-01-30 to 1991-12-22; source msha-controller-operator-history
- **controller_controls_mine:** Jones Tommy → No 2; 1989-01-30 to 1991-12-22; source msha-controller-operator-history
- **controller_controls_operator:** Jones Tommy → Meka Energy Inc; 1989-01-30 to 1991-12-22; source msha-controller-operator-history
- **operator_operates_mine:** J C & P Coal Corp → No 2; 1991-12-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Monroe  Jones → J C & P Coal Corp; 1991-12-23 to current/open; source msha-controller-operator-history