# Relationship history for MSHA mine 1601113

Current hierarchy: **Purvis Wayne → Wayne'S Sand & Gravel → Wayne'S Sand & Gravel**

- 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:** Community Sand & Gravel → Wayne'S Sand & Gravel; 1986-09-01 to 1987-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Gulotta Brent → Wayne'S Sand & Gravel; 1986-09-01 to 1987-05-19; source msha-controller-operator-history
- **controller_controls_operator:** Gulotta Brent → Community Sand & Gravel; 1986-09-01 to 1987-05-19; source msha-controller-operator-history
- **operator_operates_mine:** Wayne'S Sand & Gravel → Wayne'S Sand & Gravel; 1987-05-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Purvis Wayne → Wayne'S Sand & Gravel; 1987-05-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Purvis Wayne → Wayne'S Sand & Gravel; 1987-05-20 to current/open; source msha-controller-operator-history