# Relationship history for MSHA mine 3003038

Current hierarchy: **Eleanor A  Giebitz → HELDEBERG BLUESTONE & MARBLE INC → GRIPPEE QUARRY #4 SOUTH**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Paul F  Giebitz et al → GRIPPEE QUARRY #4 SOUTH; 1950-01-01 to 2016-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Heldeberg Bluestone & Marble Inc → GRIPPEE QUARRY #4 SOUTH; 1992-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul F  Giebitz et al → Heldeberg Bluestone & Marble Inc; 1992-03-01 to 2016-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Eleanor A  Giebitz → GRIPPEE QUARRY #4 SOUTH; 2017-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eleanor A  Giebitz → Heldeberg Bluestone & Marble Inc; 2017-01-01 to current/open; source msha-controller-operator-history