# Relationship history for MSHA mine 2901760

Current hierarchy: **Jami  Jackson; Jason  Jackson → Deming Sand & Gravel, LLC → Peru 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:** Barite Of America → Peru Mill; 1979-01-01 to 1987-03-08; source msha-controller-operator-history
- **controller_controls_mine:** Barite Ltd → Peru Mill; 1979-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barite Ltd → Barite Of America; 1979-01-01 to 1987-03-08; source msha-controller-operator-history
- **operator_operates_mine:** National Supply Company → Peru Mill; 1987-03-09 to 1990-02-01; source msha-controller-operator-history
- **controller_controls_mine:** Hacker Eugene → Peru Mill; 1987-03-09 to 1990-02-01; source msha-controller-operator-history
- **controller_controls_operator:** Hacker Eugene → National Supply Company; 1987-03-09 to 1990-02-01; source msha-controller-operator-history
- **controller_controls_mine:** Cooper Carl N → Peru Mill; 1990-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mdm Mining Ltd → Peru Mill; 1990-02-02 to 2020-08-06; source msha-controller-operator-history
- **controller_controls_operator:** Cooper Carl N → Mdm Mining Ltd; 1990-02-02 to 2020-08-06; source msha-controller-operator-history
- **controller_controls_mine:** Tyler  Jackson et al → Peru Mill; 2015-07-22 to 2022-12-21; source msha-controller-operator-history
- **operator_operates_mine:** Deming Sand & Gravel, LLC → Peru Mill; 2020-08-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tyler  Jackson et al → Deming Sand & Gravel, LLC; 2020-08-07 to 2022-12-21; source msha-controller-operator-history
- **controller_controls_operator:** Jason  Jackson et al → Deming Sand & Gravel, LLC; 2020-08-07 to 2022-12-21; source msha-controller-operator-history
- **controller_controls_mine:** Jason  Jackson et al → Peru Mill; 2022-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason  Jackson et al → Deming Sand & Gravel, LLC; 2022-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jami  Jackson et al → Deming Sand & Gravel, LLC; 2022-12-22 to current/open; source msha-controller-operator-history