# Relationship history for MSHA mine 0900909

Current hierarchy: **Daniel W  Holloway → Rockwood Stone Inc → Paulding County 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:** Daniel W  Holloway → Paulding County Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Paulding County → Paulding County Quarry; 1979-07-01 to 1988-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Paulding County-Ga → Paulding County Quarry; 1979-07-01 to 1988-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Paulding County-Ga → Paulding County; 1979-07-01 to 1988-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Rockwood Stone Inc → Paulding County Quarry; 1988-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel W  Holloway → Rockwood Stone Inc; 1988-05-01 to current/open; source msha-controller-operator-history