# Relationship history for MSHA mine 4607726

Current hierarchy: **Petitte Emelio → S T E P Processing Inc → Step No 1**

- 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:** Jasper  Petitte et al → Step No 1; 1986-03-27 to 1990-04-04; source msha-controller-operator-history
- **operator_operates_mine:** Yukon Resources Inc → Step No 1; 1989-07-01 to 1990-04-04; source msha-controller-operator-history
- **controller_controls_operator:** Jasper  Petitte et al → Yukon Resources Inc; 1989-07-01 to 1990-04-04; source msha-controller-operator-history
- **operator_operates_mine:** S T E P Processing Inc → Step No 1; 1990-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Petitte Emelio → Step No 1; 1990-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Petitte Emelio → S T E P Processing Inc; 1990-04-05 to current/open; source msha-controller-operator-history