# Relationship history for MSHA mine 4608084

Current hierarchy: **Steven R  Mullins → Old Dominion Mining Inc → No 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:** James B  Simpkins → No 1; 1991-03-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cow Creek Coal Company Inc → No 1; 1991-08-01 to 1992-10-11; source msha-controller-operator-history
- **controller_controls_operator:** James B  Simpkins → Cow Creek Coal Company Inc; 1991-08-01 to 1992-10-11; source msha-controller-operator-history
- **operator_operates_mine:** Old Dominion Mining Inc → No 1; 1992-10-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Steven R  Mullins → No 1; 1992-10-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steven R  Mullins → Old Dominion Mining Inc; 1992-10-12 to current/open; source msha-controller-operator-history