# Relationship history for MSHA mine 4105044

Current hierarchy: **Herman  Trevino; Stephen  Bakunas → Lomas Materials, LLC → Palo Blanco 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:** Hector  Garcia et al → Palo Blanco Quarry; 2012-07-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Circle T Services, LLC → Palo Blanco Quarry; 2013-12-03 to 2018-12-20; source msha-controller-operator-history
- **controller_controls_operator:** Hector  Garcia et al → Circle T Services, LLC; 2013-12-03 to 2018-12-20; source msha-controller-operator-history
- **controller_controls_operator:** Javier  Trevino et al → Circle T Services, LLC; 2013-12-03 to 2018-12-20; source msha-controller-operator-history
- **operator_operates_mine:** Lomas Materials, LLC → Palo Blanco Quarry; 2018-12-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stephen  Bakunas et al → Palo Blanco Quarry; 2018-12-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephen  Bakunas et al → Lomas Materials, LLC; 2018-12-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Herman  Trevino et al → Lomas Materials, LLC; 2018-12-21 to current/open; source msha-controller-operator-history