# Relationship history for MSHA mine 4703448

Current hierarchy: **Dennis  Navis; Jeffrey  Navis; Jennifer  Navis; Linda  Navis → Navis Stone LLC → Navis Stone LLC- Buchda 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

- **operator_operates_mine:** W&D Navis, Inc. → Navis Stone LLC- Buchda Quarry; 2006-04-05 to 2023-03-09; source msha-controller-operator-history
- **controller_controls_mine:** Dennis  Navis → Navis Stone LLC- Buchda Quarry; 2006-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dennis  Navis → W&D Navis, Inc.; 2006-04-05 to 2023-03-09; source msha-controller-operator-history
- **operator_operates_mine:** Navis Stone LLC → Navis Stone LLC- Buchda Quarry; 2023-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jennifer  Navis et al → Navis Stone LLC- Buchda Quarry; 2023-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jennifer  Navis et al → Navis Stone LLC; 2023-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dennis  Navis et al → Navis Stone LLC; 2023-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Linda  Navis et al → Navis Stone LLC; 2023-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey  Navis et al → Navis Stone LLC; 2023-03-10 to current/open; source msha-controller-operator-history