# Relationship history for MSHA mine 2602662

Current hierarchy: **Clayton  Hadorn; Ernie  Hortado → Desert Aggregates LLC → Desert Aggregates Plant #1**

- 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:** Desert Aggregates LLC → Desert Aggregates Plant #1; 2008-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ernie  Hortado  et al → Desert Aggregates Plant #1; 2008-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ernie  Hortado  et al → Desert Aggregates LLC; 2008-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clayton  Hadorn  et al → Desert Aggregates LLC; 2008-10-06 to current/open; source msha-controller-operator-history