# Relationship history for MSHA mine 1202366

Current hierarchy: **Brad K Ward; Anna C Ward → Ward Stone, LLC → Dinn 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

- **operator_operates_mine:** Ward Stone, LLC → Dinn Quarry; 2004-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Anna C Ward et al → Dinn Quarry; 2004-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anna C Ward et al → Ward Stone, LLC; 2004-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad K Ward et al → Ward Stone, LLC; 2004-11-01 to current/open; source msha-controller-operator-history