# Relationship history for MSHA mine 2501331

Current hierarchy: **John Adam Reed → Apex Sand & Gravel, LLC → Darr/Pit**

- 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:** Doug  Keller → Darr/Pit; 2015-06-17 to 2020-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Justin Wade  Johnson → Darr/Pit; 2020-04-01 to 2025-07-23; source msha-controller-operator-history
- **controller_controls_mine:** John Adam Reed → Darr/Pit; 2025-07-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Apex Sand & Gravel, LLC → Darr/Pit; 2025-12-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Doug  Keller → Apex Sand & Gravel, LLC; 2025-12-30 to 2020-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Justin Wade  Johnson → Apex Sand & Gravel, LLC; 2025-12-30 to 2025-07-23; source msha-controller-operator-history
- **controller_controls_operator:** John Adam Reed → Apex Sand & Gravel, LLC; 2025-12-30 to current/open; source msha-controller-operator-history