# Relationship history for MSHA mine 2402247

Current hierarchy: **Jacob D Cremer → Perma Stone Inc → Camas Site #1**

- 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:** Jacob D Cremer → Camas Site #1; 2001-09-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jacob D Cremer → Camas Site #1; 2001-09-10 to 2008-02-14; source msha-controller-operator-history
- **controller_controls_mine:** Jacob D  Cremer → Camas Site #1; 2001-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jacob D  Cremer → Jacob D Cremer; 2001-09-10 to 2008-02-14; source msha-controller-operator-history
- **operator_operates_mine:** Perma Stone Inc → Camas Site #1; 2008-02-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jacob D Cremer → Perma Stone Inc; 2008-02-15 to current/open; source msha-controller-operator-history