# Relationship history for MSHA mine 4404674

Current hierarchy: **Scarborough James C → Dogwood Coal Company Inc → Tipples No 1 & 2**

- 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:** Mc Clelland Herbert Jim & C J Chaffin → Tipples No 1 & 2; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sterling Mining Company → Tipples No 1 & 2; 1977-04-01 to 1982-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Mc Clelland Herbert Jim & C J Chaffin → Sterling Mining Company; 1977-04-01 to 1982-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Salyer Ronald → Tipples No 1 & 2; 1982-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dogwood Coal Company → Tipples No 1 & 2; 1982-12-01 to 1984-04-24; source msha-controller-operator-history
- **controller_controls_operator:** Salyer Ronald → Dogwood Coal Company; 1982-12-01 to 1984-04-24; source msha-controller-operator-history
- **operator_operates_mine:** Dogwood Coal Company Inc → Tipples No 1 & 2; 1984-04-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Scarborough James C → Tipples No 1 & 2; 1984-04-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scarborough James C → Dogwood Coal Company Inc; 1984-04-25 to current/open; source msha-controller-operator-history