# Relationship history for MSHA mine 3610265

Current hierarchy: **Matthew E  Noldy → Noldy Flagstone → Brown Quarry**

- 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

- **operator_operates_mine:** T & M Stone Supply LLC → Brown Quarry; 2018-10-15 to 2021-09-01; source msha-controller-operator-history
- **controller_controls_mine:** MaKaya  Williams et al → Brown Quarry; 2018-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** MaKaya  Williams et al → T & M Stone Supply LLC; 2018-10-15 to 2021-09-01; source msha-controller-operator-history
- **controller_controls_operator:** Timothy  Williams et al → T & M Stone Supply LLC; 2018-10-15 to 2021-09-01; source msha-controller-operator-history
- **operator_operates_mine:** Noldy Flagstone → Brown Quarry; 2021-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Matthew E  Noldy → Brown Quarry; 2021-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matthew E  Noldy → Noldy Flagstone; 2021-09-02 to current/open; source msha-controller-operator-history