# Relationship history for MSHA mine 2902308

Current hierarchy: **Lawrence L  Lucero → Lawrence Lucero Landscaping → Lucero Pit**

- 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:** Lawrence Lucero Landscaping → Lucero Pit; 2006-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lawrence L  Lucero → Lucero Pit; 2006-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lawrence L  Lucero → Lawrence Lucero Landscaping; 2006-03-27 to current/open; source msha-controller-operator-history