# Relationship history for MSHA mine 4406906

Current hierarchy: **Alpha Natural Resources, Inc. → Paramont Coal Company Virginia, LLC → VICC  No 8 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

- **controller_controls_mine:** El Paso Energy Corp → VICC  No 8 Mine; 1989-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cumberland Resources Corporation → VICC  No 8 Mine; 1994-07-01 to 2010-04-18; source msha-controller-operator-history
- **operator_operates_mine:** Dorchester Enterprises Inc → VICC  No 8 Mine; 1998-03-01 to 2000-09-10; source msha-controller-operator-history
- **controller_controls_operator:** Cumberland Resources Corporation → Dorchester Enterprises Inc; 1998-03-01 to 2000-09-10; source msha-controller-operator-history
- **operator_operates_mine:** Coastal Coal Company, LLC → VICC  No 8 Mine; 2000-09-11 to 2003-01-31; source msha-controller-operator-history
- **controller_controls_operator:** El Paso Energy Corp → Coastal Coal Company, LLC; 2000-09-11 to 2003-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → VICC  No 8 Mine; 2002-12-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Paramont Coal Company Virginia, LLC → VICC  No 8 Mine; 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
- **controller_controls_mine:** Massey Energy Company → VICC  No 8 Mine; 2010-04-19 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Dorchester Enterprises Inc; 2010-04-19 to 2000-09-10; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → VICC  No 8 Mine; 2011-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Dorchester Enterprises Inc; 2011-06-01 to 2000-09-10; source msha-controller-operator-history