# Relationship history for MSHA mine 4701410

Current hierarchy: **Thomas D  Kraemer; Scott  Peterson → Edward Kraemer & Sons Inc → Schultz Quarry**

- 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:** Edward Kraemer & Sons Inc → Schultz Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas D  Kraemer et al → Schultz Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas D  Kraemer et al → Edward Kraemer & Sons Inc; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Peterson et al → Edward Kraemer & Sons Inc; 1950-01-01 to current/open; source msha-controller-operator-history