# Relationship history for MSHA mine 1513126

Current hierarchy: **Biliter Marvin Jr → M & Mb Coal Company → 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:** Kaynan Enterprises Inc → No 3; 1981-09-01 to 1983-02-21; source msha-controller-operator-history
- **controller_controls_mine:** Vaughn Estille & Dennis R Caldwell → No 3; 1981-09-01 to 1983-10-04; source msha-controller-operator-history
- **controller_controls_operator:** Vaughn Estille & Dennis R Caldwell → Kaynan Enterprises Inc; 1981-09-01 to 1983-02-21; source msha-controller-operator-history
- **controller_controls_mine:** Biliter Marvin Jr → No 3; 1981-11-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lenway Coal Company → No 3; 1983-02-22 to 1984-12-12; source msha-controller-operator-history
- **controller_controls_mine:** Clark Wayne W & Jack Bush → No 3; 1983-02-22 to 1984-12-12; source msha-controller-operator-history
- **controller_controls_operator:** Clark Wayne W & Jack Bush → Lenway Coal Company; 1983-02-22 to 1984-12-12; source msha-controller-operator-history
- **operator_operates_mine:** M & Mb Coal Company → No 3; 1984-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Biliter Marvin Jr → M & Mb Coal Company; 1984-12-13 to current/open; source msha-controller-operator-history