# Relationship history for MSHA mine 2302211

Current hierarchy: **Eagle Materials Inc → Talon Concrete and Aggregates LLC → Kentucky Road 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:** Rocca Processing Llc → Kentucky Road Quarry; 2000-08-01 to 2003-09-29; source msha-controller-operator-history
- **controller_controls_mine:** Jeff  Burton et al → Kentucky Road Quarry; 2000-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Burton et al → Rocca Processing Llc; 2000-08-01 to 2003-09-29; source msha-controller-operator-history
- **controller_controls_mine:** Lafarge S A → Kentucky Road Quarry; 2001-07-12 to 2015-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Lafarge North America Inc. → Kentucky Road Quarry; 2003-09-30 to 2012-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Lafarge S A → Lafarge North America Inc.; 2003-09-30 to 2012-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Talon Concrete and Aggregates LLC → Kentucky Road Quarry; 2012-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eagle Materials Inc → Kentucky Road Quarry; 2012-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eagle Materials Inc → Talon Concrete and Aggregates LLC; 2012-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Kentucky Road Quarry; 2015-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Lafarge North America Inc.; 2015-07-10 to 2012-11-30; source msha-controller-operator-history