# Relationship history for MSHA mine 2302497

Current hierarchy: **Michael K Farmer; Elliott (Bud) E Farmer → Capital Materials, LLC → Blackwater 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Blackwater Quarry → Blackwater Quarry; 2015-11-05 to 2020-09-11; source msha-controller-operator-history
- **controller_controls_mine:** Elizabeth  Widel → Blackwater Quarry; 2015-11-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elizabeth  Widel → Blackwater Quarry; 2015-11-05 to 2020-09-11; source msha-controller-operator-history
- **controller_controls_mine:** Elliott (Bud) E Farmer  et al → Blackwater Quarry; 2016-05-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Missouri Blackwater Quarry → Blackwater Quarry; 2020-09-12 to 2023-05-03; source msha-controller-operator-history
- **controller_controls_mine:** Kenny  Lehman → Blackwater Quarry; 2020-09-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenny  Lehman → Missouri Blackwater Quarry; 2020-09-12 to 2023-05-03; source msha-controller-operator-history
- **operator_operates_mine:** Capital Materials, LLC → Blackwater Quarry; 2023-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elliott (Bud) E Farmer  et al → Capital Materials, LLC; 2023-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael K Farmer  et al → Capital Materials, LLC; 2023-05-04 to current/open; source msha-controller-operator-history