# Relationship history for MSHA mine 0504698

Current hierarchy: **Fred  Holley; Marty  Holley → H & H Stone Inc → CROSS CANYON QUARRY #2**

- 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

- **operator_operates_mine:** H & H Stone Inc → CROSS CANYON QUARRY #2; 2001-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Marty  Holley  et al → CROSS CANYON QUARRY #2; 2001-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marty  Holley  et al → H & H Stone Inc; 2001-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fred  Holley  et al → H & H Stone Inc; 2001-01-01 to current/open; source msha-controller-operator-history