# Relationship history for MSHA mine 0103482

Current hierarchy: **Christopher A Harvey → Summit Materials LLC → Guntersville Sand**

- 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:** Rogers Group Inc → Guntersville Sand; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Reed Contracting Services Inc → Guntersville Sand; 2014-11-24 to 2021-03-07; source msha-controller-operator-history
- **controller_controls_mine:** Michael W  Reed → Guntersville Sand; 2014-11-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael W  Reed → Reed Contracting Services Inc; 2014-11-24 to 2021-03-07; source msha-controller-operator-history
- **operator_operates_mine:** Rogers Group Inc → Guntersville Sand; 2021-03-08 to 2022-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Rogers Group Inc → Rogers Group Inc; 2021-03-08 to 2022-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Summit Materials LLC → Guntersville Sand; 2022-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Christopher A Harvey → Guntersville Sand; 2022-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christopher A Harvey → Summit Materials LLC; 2022-06-01 to current/open; source msha-controller-operator-history