# Relationship history for MSHA mine 0301936

Current hierarchy: **Ozark Southern Stone Investors, LLC; Ozark MP, LLC → Ozark Southern Stone Property, LLC → Ozark Southern Stone Property, 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Ozark Southern Stone LLC → Ozark Southern Stone Property, LLC; 2006-08-22 to 2013-04-02; source msha-controller-operator-history
- **controller_controls_mine:** Lowell Eric  Johnson → Ozark Southern Stone Property, LLC; 2006-08-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lowell Eric  Johnson → Ozark Southern Stone LLC; 2006-08-22 to 2013-04-02; source msha-controller-operator-history
- **operator_operates_mine:** Ozark Southern Stone → Ozark Southern Stone Property, LLC; 2013-04-03 to 2017-12-13; source msha-controller-operator-history
- **controller_controls_mine:** Debra  Johnson et al → Ozark Southern Stone Property, LLC; 2013-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Debra  Johnson et al → Ozark Southern Stone; 2013-04-03 to 2017-12-13; source msha-controller-operator-history
- **controller_controls_operator:** Lowell Eric  Johnson et al → Ozark Southern Stone; 2013-04-03 to 2017-12-13; source msha-controller-operator-history
- **operator_operates_mine:** Ozark Southern Stone Property, LLC → Ozark Southern Stone Property, LLC; 2017-12-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ozark MP, LLC et al → Ozark Southern Stone Property, LLC; 2017-12-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ozark MP, LLC et al → Ozark Southern Stone Property, LLC; 2017-12-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ozark Southern Stone Investors, LLC et al → Ozark Southern Stone Property, LLC; 2017-12-14 to current/open; source msha-controller-operator-history