# Relationship history for MSHA mine 1513650

Current hierarchy: **Lewis Lonnie-John Elder → Double L Coal Company → 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Carter Coal Company → No 1; 1982-08-01 to 1983-07-14; source msha-controller-operator-history
- **controller_controls_mine:** Carter James Et Al → No 1; 1982-08-01 to 1984-05-15; source msha-controller-operator-history
- **controller_controls_operator:** Carter James Et Al → Carter Coal Company; 1982-08-01 to 1983-07-14; source msha-controller-operator-history
- **operator_operates_mine:** Double L Coal Company → No 1; 1983-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lewis Lonnie-John Elder Et Al → No 1; 1983-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lewis Lonnie-John Elder Et Al → Double L Coal Company; 1983-07-15 to current/open; source msha-controller-operator-history