# Relationship history for MSHA mine 3303942

Current hierarchy: **Petrozzi Tillio P → Monroe Mining Inc → No 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:** Kimberly Energy Inc → No 1 Mine; 1983-04-01 to 1983-10-23; source msha-controller-operator-history
- **controller_controls_mine:** Kimberly  Seabolt  et al → No 1 Mine; 1983-04-01 to 1983-10-23; source msha-controller-operator-history
- **controller_controls_operator:** Kimberly  Seabolt  et al → Kimberly Energy Inc; 1983-04-01 to 1983-10-23; source msha-controller-operator-history
- **operator_operates_mine:** Monroe Mining Inc → No 1 Mine; 1983-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Petrozzi Tillio P → No 1 Mine; 1983-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Petrozzi Tillio P → Monroe Mining Inc; 1983-10-24 to current/open; source msha-controller-operator-history