# Relationship history for MSHA mine 0801035

Current hierarchy: **Cemex S A → CEMEX Construction Materials Florida, LLC → Inglis 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:** Southdown Inc → Inglis Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Independent Aggregates → Inglis Quarry; 1985-10-01 to 1999-10-30; source msha-controller-operator-history
- **controller_controls_mine:** Sunshine Materials Inc et al → Inglis Quarry; 1985-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sunshine Materials Inc et al → Independent Aggregates; 1985-10-01 to 1999-10-30; source msha-controller-operator-history
- **controller_controls_operator:** E R Jahna Industries Inc et al → Independent Aggregates; 1985-10-01 to 1999-10-30; source msha-controller-operator-history
- **operator_operates_mine:** Southdown Inc → Inglis Quarry; 1999-10-31 to 2000-11-02; source msha-controller-operator-history
- **controller_controls_operator:** Southdown Inc → Southdown Inc; 1999-10-31 to 2000-11-02; source msha-controller-operator-history
- **operator_operates_mine:** CEMEX SMI HOLDINGS, LLC → Inglis Quarry; 2000-11-03 to 2006-08-07; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Inglis Quarry; 2000-11-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → CEMEX SMI HOLDINGS, LLC; 2000-11-03 to 2006-08-07; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Inglis Quarry; 2001-07-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** CEMEX CONSTRUCTION MATERIALS LP → Inglis Quarry; 2006-08-08 to 2008-12-18; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → CEMEX CONSTRUCTION MATERIALS LP; 2006-08-08 to 2008-12-18; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Inglis Quarry; 2008-12-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** CEMEX Construction Materials Florida, LLC → Inglis Quarry; 2008-12-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → CEMEX Construction Materials Florida, LLC; 2008-12-19 to current/open; source msha-controller-operator-history