# Relationship history for MSHA mine 1601050

Current hierarchy: **M P  Schneider III → St Joe Brick Works, Inc. → PIT 370**

- 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:** M P  Schneider III → PIT 370; 1979-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** St Joe Brick Works Inc → PIT 370; 1984-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** M P  Schneider III → St Joe Brick Works Inc; 1984-08-01 to current/open; source msha-controller-operator-history