# Relationship history for MSHA mine 2302442

Current hierarchy: **Breedon Group PLC → RMC, LLC → RMC Leeper**

- 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:** Duncan Ready Mix Concrete, Inc. → RMC Leeper; 2012-09-17 to 2019-04-03; source msha-controller-operator-history
- **controller_controls_mine:** John Kenneth  Duncan → RMC Leeper; 2012-09-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John Kenneth  Duncan → Duncan Ready Mix Concrete, Inc.; 2012-09-17 to 2019-04-03; source msha-controller-operator-history
- **operator_operates_mine:** RMC, LLC → RMC Leeper; 2019-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ready Mix Investments LLC et al → RMC Leeper; 2019-04-04 to 2024-03-05; source msha-controller-operator-history
- **controller_controls_operator:** Ready Mix Investments LLC et al → RMC, LLC; 2019-04-04 to 2024-03-05; source msha-controller-operator-history
- **controller_controls_operator:** BMC Enterprises et al → RMC, LLC; 2019-04-04 to 2024-03-05; source msha-controller-operator-history
- **controller_controls_mine:** Breedon Group PLC → RMC Leeper; 2024-03-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Breedon Group PLC → RMC, LLC; 2024-03-06 to current/open; source msha-controller-operator-history