# Relationship history for MSHA mine 4101782

Current hierarchy: **Cementir Holding; Cemex SA → Lehigh White Cement Company LLC → OGLESBY 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:** Heidelberg Materials AG → OGLESBY QUARRY; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Universal Atlas Cement Company → OGLESBY QUARRY; 1950-01-01 to 1980-10-06; source msha-controller-operator-history
- **controller_controls_mine:** USX Corp (United States Steel Corp) → OGLESBY QUARRY; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** USX Corp (United States Steel Corp) → Universal Atlas Cement Company; 1950-01-01 to 1980-10-06; source msha-controller-operator-history
- **operator_operates_mine:** Lehigh Portland Cement Company → OGLESBY QUARRY; 1980-10-07 to 2002-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Lehigh Portland Cement Company; 1980-10-07 to 2002-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Heidelberg Materials AG → OGLESBY QUARRY; 2000-07-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lehigh Cement Company LLC → OGLESBY QUARRY; 2002-02-01 to 2018-05-28; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Lehigh Cement Company LLC; 2002-02-01 to 2018-05-28; source msha-controller-operator-history
- **controller_controls_mine:** Cemex SA  et al → OGLESBY QUARRY; 2018-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lehigh White Cement Company LLC → OGLESBY QUARRY; 2018-05-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex SA  et al → Lehigh White Cement Company LLC; 2018-05-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cementir Holding et al → Lehigh White Cement Company LLC; 2018-05-29 to current/open; source msha-controller-operator-history