# Relationship history for MSHA mine 1514207

Current hierarchy: **White J L → J L White Coal → #1 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** J R E Coal → #1 Mine; 1983-09-01 to 1984-08-21; source msha-controller-operator-history
- **controller_controls_mine:** White J L-Ranny Frost Et Al → #1 Mine; 1983-09-01 to 1984-08-21; source msha-controller-operator-history
- **controller_controls_operator:** White J L-Ranny Frost Et Al → J R E Coal; 1983-09-01 to 1984-08-21; source msha-controller-operator-history
- **operator_operates_mine:** J L White Coal → #1 Mine; 1984-08-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** White J L → #1 Mine; 1984-08-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** White J L → J L White Coal; 1984-08-22 to current/open; source msha-controller-operator-history