# Relationship history for MSHA mine 4003347

Current hierarchy: **Margarito  Lujan → United Stone, LLC → Mt Olive 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

- **operator_operates_mine:** D & L Stone LLC → Mt Olive Quarry; 2009-04-16 to 2018-02-04; source msha-controller-operator-history
- **controller_controls_mine:** Lesley  Holdbrooks et al → Mt Olive Quarry; 2009-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lesley  Holdbrooks et al → D & L Stone LLC; 2009-04-16 to 2018-02-04; source msha-controller-operator-history
- **controller_controls_operator:** Darrin  Holdbrooks et al → D & L Stone LLC; 2009-04-16 to 2018-02-04; source msha-controller-operator-history
- **controller_controls_mine:** Margarito  Lujan → Mt Olive Quarry; 2013-03-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** United Stone, LLC → Mt Olive Quarry; 2018-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Margarito  Lujan → United Stone, LLC; 2018-02-05 to current/open; source msha-controller-operator-history