# Relationship history for MSHA mine 4104826

Current hierarchy: **Martin  Mendoza → Mendoza Stone LLC → Mendoza Stone LLC**

- 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:** Mendoza Stone → Mendoza Stone LLC; 2010-05-12 to 2011-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Martin  Mendoza → Mendoza Stone LLC; 2010-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin  Mendoza → Mendoza Stone; 2010-05-12 to 2011-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Mendoza Stone LLC → Mendoza Stone LLC; 2011-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Martin  Mendoza → Mendoza Stone LLC; 2011-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin  Mendoza → Mendoza Stone LLC; 2011-07-01 to current/open; source msha-controller-operator-history