# Relationship history for MSHA mine 5400315

Current hierarchy: **Francisco  Juelle → RJ Gravel → RJ Gravel**

- 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:** Constructora Minillas Inc → RJ Gravel; 1989-10-01 to 1999-05-13; source msha-controller-operator-history
- **controller_controls_mine:** Carlos A  Gascot → RJ Gravel; 1989-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carlos A  Gascot → Constructora Minillas Inc; 1989-10-01 to 1999-05-13; source msha-controller-operator-history
- **operator_operates_mine:** RJ Gravel → RJ Gravel; 1999-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Francisco  Juelle  et al → RJ Gravel; 1999-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Francisco  Juelle  et al → RJ Gravel; 1999-05-14 to current/open; source msha-controller-operator-history