# Relationship history for MSHA mine 0801376

Current hierarchy: **Michael  Hollingshead → SRM Materials → SRM MATERIALS, LLC**

- 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:** Marion  Mosely et al → SRM MATERIALS, LLC; 1990-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Westwind Contracting, Inc. → SRM MATERIALS, LLC; 2008-12-29 to 2009-08-13; source msha-controller-operator-history
- **controller_controls_operator:** Marion  Mosely et al → Westwind Contracting, Inc.; 2008-12-29 to 2009-08-13; source msha-controller-operator-history
- **operator_operates_mine:** East Coast Aggregates LLC → SRM MATERIALS, LLC; 2009-08-14 to 2019-09-10; source msha-controller-operator-history
- **controller_controls_mine:** McDonald Investment Company Inc → SRM MATERIALS, LLC; 2009-08-14 to 2014-07-06; source msha-controller-operator-history
- **controller_controls_operator:** McDonald Investment Company Inc → East Coast Aggregates LLC; 2009-08-14 to 2014-07-06; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Hollingshead et al → SRM MATERIALS, LLC; 2013-12-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michel  Moukhtara et al → SRM MATERIALS, LLC; 2014-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michel  Moukhtara et al → East Coast Aggregates LLC; 2014-07-07 to 2019-09-10; source msha-controller-operator-history
- **operator_operates_mine:** SRM Materials → SRM MATERIALS, LLC; 2019-09-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Hollingshead et al → SRM Materials; 2019-09-11 to current/open; source msha-controller-operator-history