# Relationship history for MSHA mine 3101878

Current hierarchy: **Construction Partners Inc → FSC II, LLC → Grit Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Moratoc Sand & Gravel Inc → Grit Pit; 1979-01-01 to 1996-09-12; source msha-controller-operator-history
- **controller_controls_mine:** Charles C  Warmack et al → Grit Pit; 1979-01-01 to 1996-09-12; source msha-controller-operator-history
- **controller_controls_operator:** Charles C  Warmack et al → Moratoc Sand & Gravel Inc; 1979-01-01 to 1996-09-12; source msha-controller-operator-history
- **controller_controls_mine:** Walter F  Rose Jr → Grit Pit; 1985-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Walter F  Rose Jr → Grit Pit; 1988-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Twenty-Twenty Sand Corp → Grit Pit; 1996-09-13 to 2010-01-13; source msha-controller-operator-history
- **controller_controls_operator:** Walter F  Rose Jr → Twenty-Twenty Sand Corp; 1996-09-13 to 2010-01-13; source msha-controller-operator-history
- **operator_operates_mine:** Rose Brothers Paving Company, Inc. → Grit Pit; 2010-01-14 to 2021-12-19; source msha-controller-operator-history
- **controller_controls_operator:** Walter F  Rose Jr → Rose Brothers Paving Company, Inc.; 2010-01-14 to 2021-12-19; source msha-controller-operator-history
- **controller_controls_mine:** Construction Partners Inc → Grit Pit; 2021-08-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** FSC II, LLC → Grit Pit; 2021-12-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Construction Partners Inc → FSC II, LLC; 2021-12-20 to current/open; source msha-controller-operator-history