# Relationship history for MSHA mine 2902174

Current hierarchy: **David  Baeza → Desert Valley Inc → Desert Valley Inc**

- 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:** D & G Construction → Desert Valley Inc; 1998-04-01 to 2007-04-15; source msha-controller-operator-history
- **controller_controls_mine:** David  Baeza → Desert Valley Inc; 1998-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Baeza → D & G Construction; 1998-04-01 to 2007-04-15; source msha-controller-operator-history
- **operator_operates_mine:** Desert Valley Inc → Desert Valley Inc; 2007-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David  Baeza → Desert Valley Inc; 2007-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Baeza → Desert Valley Inc; 2007-04-16 to current/open; source msha-controller-operator-history