# Relationship history for MSHA mine 1514652

Current hierarchy: **Coleman Elmer → Jackson Branch Coal Company → No 29 Mine**

- 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:** Coleman Elmer → No 29 Mine; 1972-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jackson Branch Coal Company → No 29 Mine; 1984-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Coleman Elmer → Jackson Branch Coal Company; 1984-06-01 to current/open; source msha-controller-operator-history