# Relationship history for MSHA mine 3609347

Current hierarchy: **Clyde  La Rue Jr; Edward  Kelley → Clyde La Rue Flagstone → Kirchmeier 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:** Edward  Kelley et al → Kirchmeier Quarry; 1987-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kirchmeier Quarry → Kirchmeier Quarry; 2005-06-06 to 2008-03-30; source msha-controller-operator-history
- **controller_controls_mine:** Michael R Kirchmeier → Kirchmeier Quarry; 2005-06-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael R Kirchmeier → Kirchmeier Quarry; 2005-06-06 to 2008-03-30; source msha-controller-operator-history
- **operator_operates_mine:** Clyde La Rue Flagstone → Kirchmeier Quarry; 2008-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward  Kelley et al → Clyde La Rue Flagstone; 2008-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clyde  La Rue Jr et al → Clyde La Rue Flagstone; 2008-03-31 to current/open; source msha-controller-operator-history