# Relationship history for MSHA mine 1510919

Current hierarchy: **Jerry K  Lester → Kodiak Coal Inc → No 2-A**

- 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:** Clevinger James D & Billie Coleman → No 2-A; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Clevinger Brothers Coal Company → No 2-A; 1977-11-01 to 1978-09-11; source msha-controller-operator-history
- **controller_controls_operator:** Clevinger James D & Billie Coleman → Clevinger Brothers Coal Company; 1977-11-01 to 1978-09-11; source msha-controller-operator-history
- **operator_operates_mine:** D K T Coal Company → No 2-A; 1978-09-12 to 1985-12-15; source msha-controller-operator-history
- **controller_controls_mine:** Coleman Roy D & James K--Thomas J Tabor → No 2-A; 1978-09-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Coleman Roy D & James K--Thomas J Tabor → D K T Coal Company; 1978-09-12 to 1985-12-15; source msha-controller-operator-history
- **controller_controls_mine:** Jerry K  Lester → No 2-A; 1984-08-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kodiak Coal Inc → No 2-A; 1985-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry K  Lester → Kodiak Coal Inc; 1985-12-16 to current/open; source msha-controller-operator-history