# Relationship history for MSHA mine 4407055

Current hierarchy: **Alpha Natural Resources, Inc. → Paramont Coal Company Virginia, LLC → Deep Mine # 10**

- 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:** El Paso Energy Corp → Deep Mine # 10; 1989-04-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Coastal Coal Company, LLC. → Deep Mine # 10; 2002-08-12 to 2003-01-31; source msha-controller-operator-history
- **controller_controls_operator:** El Paso Energy Corp → Coastal Coal Company, LLC.; 2002-08-12 to 2003-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Deep Mine # 10; 2002-12-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Paramont Coal Company Virginia, LLC → Deep Mine # 10; 2003-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Paramont Coal Company Virginia, LLC; 2003-02-01 to current/open; source msha-controller-operator-history