# Relationship history for MSHA mine 1101035

Current hierarchy: **F Brett  Denny; Jeff G  Denny → J & B Sand & Gravel LLC → Maunie Plant Dredge & Mill**

- 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:** Associated Materials Inc → Maunie Plant Dredge & Mill; 1950-01-01 to 1987-06-07; source msha-controller-operator-history
- **controller_controls_mine:** Alldredge E M → Maunie Plant Dredge & Mill; 1950-01-01 to 1987-06-07; source msha-controller-operator-history
- **controller_controls_operator:** Alldredge E M → Associated Materials Inc; 1950-01-01 to 1987-06-07; source msha-controller-operator-history
- **operator_operates_mine:** O'Daniel Trucking Co. → Maunie Plant Dredge & Mill; 1987-06-08 to 2008-01-02; source msha-controller-operator-history
- **controller_controls_mine:** E H  O'Daniels Jr → Maunie Plant Dredge & Mill; 1987-06-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** E H  O'Daniels Jr → O'Daniel Trucking Co.; 1987-06-08 to 2008-01-02; source msha-controller-operator-history
- **operator_operates_mine:** J & B Sand & Gravel LLC → Maunie Plant Dredge & Mill; 2008-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeff G  Denny et al → Maunie Plant Dredge & Mill; 2008-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff G  Denny et al → J & B Sand & Gravel LLC; 2008-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** F Brett  Denny et al → J & B Sand & Gravel LLC; 2008-01-03 to current/open; source msha-controller-operator-history