# Relationship history for MSHA mine 3304039

Current hierarchy: **Amos  Rawson → C & E Coal Inc → C & E #2**

- 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:** Amos  Rawson → C & E #2; 1983-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & E Coal Inc → C & E #2; 1986-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amos  Rawson → C & E Coal Inc; 1986-01-01 to current/open; source msha-controller-operator-history