# Relationship history for MSHA mine 3300161

Current hierarchy: **Eagle Materials Inc → Fairborn Cement Company → Fairborn Cement Plant**

- 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:** Southdown Inc → Fairborn Cement Plant; 1950-01-01 to 2001-02-27; source msha-controller-operator-history
- **controller_controls_mine:** Southdown Inc → Fairborn Cement Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Southdown Inc → Southdown Inc; 1950-01-01 to 2001-02-27; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Fairborn Cement Plant; 1994-09-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cemex Inc → Fairborn Cement Plant; 2001-02-28 to 2010-03-11; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Cemex Inc; 2001-02-28 to 2010-03-11; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Fairborn Cement Plant; 2008-08-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cemex Construction Materials Atlantic, LLC → Fairborn Cement Plant; 2010-03-12 to 2017-02-10; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Cemex Construction Materials Atlantic, LLC; 2010-03-12 to 2017-02-10; source msha-controller-operator-history
- **operator_operates_mine:** Fairborn Cement Company → Fairborn Cement Plant; 2017-02-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eagle Materials Inc → Fairborn Cement Plant; 2017-02-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eagle Materials Inc → Fairborn Cement Company; 2017-02-11 to current/open; source msha-controller-operator-history