# Relationship history for MSHA mine 2103510

Current hierarchy: **Scott  Peterson; Kerin  Peterson → Kraemer Mining and Materials Inc → Mille Lacs 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

- **controller_controls_mine:** Scott  Peterson et al → Mille Lacs Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Edward Kraemer & Sons Inc → Mille Lacs Quarry; 2005-08-08 to 2007-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Peterson et al → Edward Kraemer & Sons Inc; 2005-08-08 to 2007-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Thomas D  Kraemer et al → Edward Kraemer & Sons Inc; 2005-08-08 to 2007-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Scott  Peterson et al → Mille Lacs Quarry; 2006-06-16 to 2024-06-08; source msha-controller-operator-history
- **operator_operates_mine:** Kraemer Mining and Materials Inc → Mille Lacs Quarry; 2008-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Peterson et al → Kraemer Mining and Materials Inc; 2008-01-01 to 2024-06-08; source msha-controller-operator-history
- **controller_controls_operator:** Thomas D  Kraemer et al → Kraemer Mining and Materials Inc; 2008-01-01 to 2024-06-08; source msha-controller-operator-history
- **controller_controls_mine:** Scott  Peterson et al → Mille Lacs Quarry; 2024-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Peterson et al → Kraemer Mining and Materials Inc; 2024-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kerin  Peterson et al → Kraemer Mining and Materials Inc; 2024-06-09 to current/open; source msha-controller-operator-history