# Relationship history for MSHA mine 1700976

Current hierarchy: **Allen W  Levesque → Levesque Gravel → Levesque 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Levesque Gravel → Levesque Gravel; 2015-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Allen W  Levesque → Levesque Gravel; 2015-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Allen W  Levesque → Levesque Gravel; 2015-11-04 to current/open; source msha-controller-operator-history