# Relationship history for MSHA mine 1511001

Current hierarchy: **Jerry K  Lester → Kodiak Coal Inc → 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:** Johnson Frelland Et Al → No 1; 1974-09-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Frelland Johnson Coal Company → No 1; 1977-12-01 to 1978-12-18; source msha-controller-operator-history
- **controller_controls_operator:** Johnson Frelland Et Al → Frelland Johnson Coal Company; 1977-12-01 to 1978-12-18; source msha-controller-operator-history
- **controller_controls_mine:** Coleman Roy D & James K--Thomas J Tabor → No 1; 1978-09-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** D K T Coal Company → No 1; 1978-12-19 to 1980-06-23; source msha-controller-operator-history
- **controller_controls_operator:** Coleman Roy D & James K--Thomas J Tabor → D K T Coal Company; 1978-12-19 to 1980-06-23; source msha-controller-operator-history
- **operator_operates_mine:** O D Mining Company → No 1; 1980-06-24 to 1980-10-26; source msha-controller-operator-history
- **controller_controls_mine:** Mullins Estill--Otis Davis & Billy Joe Phillips → No 1; 1980-06-24 to 1980-10-26; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Estill--Otis Davis & Billy Joe Phillips → O D Mining Company; 1980-06-24 to 1980-10-26; source msha-controller-operator-history
- **operator_operates_mine:** O D Mining Company → No 1; 1980-10-27 to 1980-12-28; source msha-controller-operator-history
- **controller_controls_mine:** Stanley Kenneth D → No 1; 1980-10-27 to 1980-12-28; source msha-controller-operator-history
- **controller_controls_operator:** Stanley Kenneth D → O D Mining Company; 1980-10-27 to 1980-12-28; source msha-controller-operator-history
- **operator_operates_mine:** Buz-Kar Energy Inc → No 1; 1980-12-29 to 1984-08-30; source msha-controller-operator-history
- **controller_controls_mine:** Hatfield Tracy → No 1; 1980-12-29 to 1984-08-30; source msha-controller-operator-history
- **controller_controls_operator:** Hatfield Tracy → Buz-Kar Energy Inc; 1980-12-29 to 1984-08-30; source msha-controller-operator-history
- **operator_operates_mine:** Kodiak Coal Inc → No 1; 1984-08-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jerry K  Lester → No 1; 1984-08-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry K  Lester → Kodiak Coal Inc; 1984-08-31 to current/open; source msha-controller-operator-history