# Relationship history for MSHA mine 4406794

Current hierarchy: **Alpha Natural Resources, Inc. → Maxxim Rebuild Company LLC → Esserville Shop**

- 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:** Pittston Company → Esserville Shop; 1986-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Paramont Coal Corp → Esserville Shop; 1995-05-01 to 2002-12-12; source msha-controller-operator-history
- **controller_controls_operator:** Pittston Company → Paramont Coal Corp; 1995-05-01 to 2002-12-12; source msha-controller-operator-history
- **operator_operates_mine:** Maxxim Rebuild Company LLC → Esserville Shop; 2002-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Esserville Shop; 2002-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Maxxim Rebuild Company LLC; 2002-12-13 to current/open; source msha-controller-operator-history