# Relationship history for MSHA mine 4003268

Current hierarchy: **Estate of Dennis R Hinch → SCP Investments LLC → Old County 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:** SCP Investments LLC → Old County Quarry; 2005-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dennis R  Hinch et al → Old County Quarry; 2005-12-13 to 2022-10-28; source msha-controller-operator-history
- **controller_controls_operator:** Dennis R  Hinch et al → SCP Investments LLC; 2005-12-13 to 2022-10-28; source msha-controller-operator-history
- **controller_controls_operator:** Patrick S  Stone et al → SCP Investments LLC; 2005-12-13 to 2022-10-28; source msha-controller-operator-history
- **controller_controls_mine:** Estate of Dennis R Hinch et al → Old County Quarry; 2022-10-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Estate of Dennis R Hinch et al → SCP Investments LLC; 2022-10-29 to current/open; source msha-controller-operator-history