# Relationship history for MSHA mine 3003272

Current hierarchy: **J R  Pratt → NORTHEAST SAND & STONE, LLC → CAZA PIT**

- 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:** Bruce E Caza → CAZA PIT; 1999-05-01 to 2026-05-02; source msha-controller-operator-history
- **controller_controls_mine:** Bruce E Caza → CAZA PIT; 1999-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bruce E Caza → Bruce E Caza; 1999-05-01 to 2026-05-02; source msha-controller-operator-history
- **operator_operates_mine:** Northeast Sand & Stone, LLC → CAZA PIT; 2026-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** J R  Pratt → CAZA PIT; 2026-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** J R  Pratt → Northeast Sand & Stone, LLC; 2026-05-03 to current/open; source msha-controller-operator-history