# Relationship history for MSHA mine 0202741

Current hierarchy: **Shirley J  Hammond → Hammond Wholesale Flagstone Inc. → Fitzgerald**

- 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:** Drake Stone Products Inc → Fitzgerald; 1997-10-01 to 2002-09-05; source msha-controller-operator-history
- **controller_controls_mine:** Harley  Gray Jr → Fitzgerald; 1997-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harley  Gray Jr → Drake Stone Products Inc; 1997-10-01 to 2002-09-05; source msha-controller-operator-history
- **controller_controls_mine:** Shirley J  Hammond → Fitzgerald; 1999-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hammond Wholesale Flagstone Inc. → Fitzgerald; 2002-09-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shirley J  Hammond → Hammond Wholesale Flagstone Inc.; 2002-09-06 to current/open; source msha-controller-operator-history