# Relationship history for MSHA mine 1102975

Current hierarchy: **Jacob J  Oros → Oros and Busch Application Technologies, Inc → Buckheart Mine #17**

- 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:** Dave Clinard Truck Service Inc → Buckheart Mine #17; 1995-03-01 to 2017-12-13; source msha-controller-operator-history
- **controller_controls_mine:** David  Clinard → Buckheart Mine #17; 1995-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Clinard → Dave Clinard Truck Service Inc; 1995-03-01 to 2017-12-13; source msha-controller-operator-history
- **operator_operates_mine:** Oros and Busch Application Technologies, Inc → Buckheart Mine #17; 2017-12-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jacob J  Oros → Buckheart Mine #17; 2017-12-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jacob J  Oros → Oros and Busch Application Technologies, Inc; 2017-12-14 to current/open; source msha-controller-operator-history