# Relationship history for MSHA mine 2402541

Current hierarchy: **Yancy Dale  Terland → Titan Sand and Gravel LLC → Titan Crusher**

- 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:** Bonnie  Conner → Titan Crusher; 1991-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Conner's Concrete Inc → Titan Crusher; 2009-01-01 to 2026-07-13; source msha-controller-operator-history
- **controller_controls_operator:** Bonnie  Conner → Conner's Concrete Inc; 2009-01-01 to 2026-07-13; source msha-controller-operator-history
- **operator_operates_mine:** Titan Sand and Gravel LLC → Titan Crusher; 2026-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Yancy Dale  Terland → Titan Crusher; 2026-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Yancy Dale  Terland → Titan Sand and Gravel LLC; 2026-07-14 to current/open; source msha-controller-operator-history