# Relationship history for MSHA mine 3608794

Current hierarchy: **Andy G  Cramer; Melissa G  Cramer → Penn Run Quarry → PENN RUN 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:** Penn Run Quarry → PENN RUN QUARRY; 1999-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Howard R Cramer et al → PENN RUN QUARRY; 1999-06-01 to 2016-08-15; source msha-controller-operator-history
- **controller_controls_operator:** Howard R Cramer et al → Penn Run Quarry; 1999-06-01 to 2016-08-15; source msha-controller-operator-history
- **controller_controls_operator:** Andy G Cramer et al → Penn Run Quarry; 1999-06-01 to 2016-08-15; source msha-controller-operator-history
- **controller_controls_mine:** Melissa G  Cramer et al → PENN RUN QUARRY; 2016-08-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Melissa G  Cramer et al → Penn Run Quarry; 2016-08-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Andy G  Cramer et al → Penn Run Quarry; 2016-08-16 to current/open; source msha-controller-operator-history