# Relationship history for MSHA mine 2401863

Current hierarchy: **Antonioli Peter S → Northmont Resource & Exploration Co. → Keating Project**

- 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:** Antonioli Peter S → Keating Project; 1982-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Westex Services → Keating Project; 1988-02-01 to 2011-10-26; source msha-controller-operator-history
- **controller_controls_mine:** Antonioli Peter S → Keating Project; 1988-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Antonioli Peter S → Westex Services; 1988-02-01 to 2011-10-26; source msha-controller-operator-history
- **operator_operates_mine:** Northmont Resource & Exploration Co. → Keating Project; 2011-10-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Antonioli Peter S → Northmont Resource & Exploration Co.; 2011-10-27 to current/open; source msha-controller-operator-history