# Relationship history for MSHA mine 2402397

Current hierarchy: **Jerry  Otto; Debbie  Otto → Otto Contruction Inc → Jaw Cone Crusher**

- 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:** Debbie  Otto et al → Jaw Cone Crusher; 2000-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Otto Contruction Inc → Jaw Cone Crusher; 2005-03-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Debbie  Otto et al → Otto Contruction Inc; 2005-03-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry  Otto et al → Otto Contruction Inc; 2005-03-28 to current/open; source msha-controller-operator-history