# Relationship history for MSHA mine 4002951

Current hierarchy: **Stanley R  Ditty → Cumberland Valley Contractors Inc → Cvc No 3**

- 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:** Capps Ronald E → Cvc No 3; 1973-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stanley R  Ditty → Cvc No 3; 1987-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** New Hignite Coal Company Inc → Cvc No 3; 1987-06-01 to 1989-03-13; source msha-controller-operator-history
- **controller_controls_operator:** Capps Ronald E → New Hignite Coal Company Inc; 1987-06-01 to 1989-03-13; source msha-controller-operator-history
- **operator_operates_mine:** Cumberland Valley Contractors Inc → Cvc No 3; 1989-03-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stanley R  Ditty → Cumberland Valley Contractors Inc; 1989-03-14 to current/open; source msha-controller-operator-history