# Relationship history for MSHA mine 3610268

Current hierarchy: **Troy  Gamble → Gamble Flagstone → Lenox**

- 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:** Troy  Gamble → Lenox; 2001-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** August F  DeLuca → Lenox; 2015-06-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rock Ridge Stone → Lenox; 2018-11-30 to 2020-08-30; source msha-controller-operator-history
- **controller_controls_operator:** August F  DeLuca → Rock Ridge Stone; 2018-11-30 to 2020-08-30; source msha-controller-operator-history
- **operator_operates_mine:** Gamble Flagstone → Lenox; 2020-08-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Troy  Gamble → Gamble Flagstone; 2020-08-31 to current/open; source msha-controller-operator-history