# Relationship history for MSHA mine 0800089

Current hierarchy: **Michael  Hollingshead → SRM Materials, LLC → SRM Materials Cabbage Grove**

- 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:** Dolime Minerals Company → SRM Materials Cabbage Grove; 1950-01-01 to 1983-01-25; source msha-controller-operator-history
- **controller_controls_mine:** American Resources Inc → SRM Materials Cabbage Grove; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** American Resources Inc → Dolime Minerals Company; 1950-01-01 to 1983-01-25; source msha-controller-operator-history
- **operator_operates_mine:** Cabbage Grove Mining Co Inc → SRM Materials Cabbage Grove; 1983-01-26 to 2013-09-24; source msha-controller-operator-history
- **controller_controls_mine:** E R Jahna  Industries Inc → SRM Materials Cabbage Grove; 1983-01-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** E R Jahna  Industries Inc → Cabbage Grove Mining Co Inc; 1983-01-26 to 2013-09-24; source msha-controller-operator-history
- **operator_operates_mine:** Big Horse Aggregates → SRM Materials Cabbage Grove; 2013-09-25 to 2019-09-05; source msha-controller-operator-history
- **controller_controls_mine:** Michel  Moukhtara et al → SRM Materials Cabbage Grove; 2013-09-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michel  Moukhtara et al → Big Horse Aggregates; 2013-09-25 to 2019-09-05; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Hollingshead et al → SRM Materials Cabbage Grove; 2013-12-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** SRM Materials, LLC → SRM Materials Cabbage Grove; 2019-09-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Hollingshead et al → SRM Materials, LLC; 2019-09-06 to current/open; source msha-controller-operator-history