# Relationship history for MSHA mine 3003214

Current hierarchy: **Dana M  Donnelly → Buffalo Creek Landscaping Inc → YORKSHIRE GRAVEL PRODUCTS**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Buffalo Creek Landscaping Inc → YORKSHIRE GRAVEL PRODUCTS; 1998-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dana M  Donnelly  et al → YORKSHIRE GRAVEL PRODUCTS; 1998-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dana M  Donnelly  et al → Buffalo Creek Landscaping Inc; 1998-03-01 to current/open; source msha-controller-operator-history