# Relationship history for MSHA mine 4608841

Current hierarchy: **David L  Huffman → D M D Mining Inc → South East Mine #3 Uk**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** El Paso Energy Corp → South East Mine #3 Uk; 1979-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David L  Huffman → South East Mine #3 Uk; 1999-04-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Coastal Coal-West Virginia Llc → South East Mine #3 Uk; 2000-07-01 to 2000-10-15; source msha-controller-operator-history
- **controller_controls_operator:** El Paso Energy Corp → Coastal Coal-West Virginia Llc; 2000-07-01 to 2000-10-15; source msha-controller-operator-history
- **operator_operates_mine:** D M D Mining Inc → South East Mine #3 Uk; 2000-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David L  Huffman → D M D Mining Inc; 2000-10-16 to current/open; source msha-controller-operator-history