# Relationship history for MSHA mine 3003571

Current hierarchy: **Brent M Deso; Andrew J Deso → R Deso Inc → Prospect Hill 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:** James  Deso → Prospect Hill Quarry; 1985-04-01 to 2018-12-31; source msha-controller-operator-history
- **operator_operates_mine:** R Deso Inc → Prospect Hill Quarry; 2006-11-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Deso → R Deso Inc; 2006-11-28 to 2018-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Brent M Deso et al → Prospect Hill Quarry; 2019-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brent M Deso et al → R Deso Inc; 2019-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Andrew J Deso et al → R Deso Inc; 2019-01-01 to current/open; source msha-controller-operator-history