# Relationship history for MSHA mine 4103987

Current hierarchy: **Curtis J  Wheatcraft → Wheatcraft Inc → RED ROSE QUARRY**

- 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:** Curtis J  Wheatcraft → RED ROSE QUARRY; 1981-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Wheatcraft Inc → RED ROSE QUARRY; 1998-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Curtis J  Wheatcraft → Wheatcraft Inc; 1998-03-01 to current/open; source msha-controller-operator-history