# Relationship history for MSHA mine 4002930

Current hierarchy: **James  Hood → Hood Coal Corp → Tipple #1**

- 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:** De Voe Robert F Et Al → Tipple #1; 1982-08-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Meta Elkhorn Mining Company Inc → Tipple #1; 1986-07-01 to 1991-05-05; source msha-controller-operator-history
- **controller_controls_operator:** De Voe Robert F Et Al → Meta Elkhorn Mining Company Inc; 1986-07-01 to 1991-05-05; source msha-controller-operator-history
- **controller_controls_mine:** James  Hood et al → Tipple #1; 1990-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hood Coal Corp → Tipple #1; 1991-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Hood et al → Hood Coal Corp; 1991-05-06 to current/open; source msha-controller-operator-history