# Relationship history for MSHA mine 1401125

Current hierarchy: **Curtis D  Whitaker → Whitaker Aggregates → Whitaker Aggregates Cedar Vale 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:** Billy D  McAdam → Whitaker Aggregates Cedar Vale Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Southeast Materials Inc → Whitaker Aggregates Cedar Vale Quarry; 1950-01-01 to 1981-08-20; source msha-controller-operator-history
- **controller_controls_mine:** R D  Shore → Whitaker Aggregates Cedar Vale Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** R D  Shore → Southeast Materials Inc; 1950-01-01 to 1981-08-20; source msha-controller-operator-history
- **operator_operates_mine:** Mc Adam Limestone Products Inc → Whitaker Aggregates Cedar Vale Quarry; 1981-08-21 to 1996-05-12; source msha-controller-operator-history
- **controller_controls_operator:** Billy D  McAdam → Mc Adam Limestone Products Inc; 1981-08-21 to 1996-05-12; source msha-controller-operator-history
- **controller_controls_mine:** Hunt Midwest Enterprises → Whitaker Aggregates Cedar Vale Quarry; 1985-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hunt Midwest Mining Inc → Whitaker Aggregates Cedar Vale Quarry; 1996-05-13 to 2005-07-29; source msha-controller-operator-history
- **controller_controls_operator:** Hunt Midwest Enterprises → Hunt Midwest Mining Inc; 1996-05-13 to 2005-07-29; source msha-controller-operator-history
- **operator_operates_mine:** Whitaker Aggregates → Whitaker Aggregates Cedar Vale Quarry; 2005-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Curtis D  Whitaker et al → Whitaker Aggregates Cedar Vale Quarry; 2005-07-30 to 2013-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Curtis D  Whitaker et al → Whitaker Aggregates; 2005-07-30 to 2013-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Sandra K  Whitaker et al → Whitaker Aggregates; 2005-07-30 to 2013-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Curtis D  Whitaker → Whitaker Aggregates Cedar Vale Quarry; 2014-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Curtis D  Whitaker → Whitaker Aggregates; 2014-01-01 to current/open; source msha-controller-operator-history