# Relationship history for MSHA mine 4606364

Current hierarchy: **Cline Jack → Idaho Screening Company → Mae Tipple**

- 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:** Idaho Screening Company → Mae Tipple; 1981-08-01 to 1983-04-20; source msha-controller-operator-history
- **controller_controls_mine:** Michael P  Perilli → Mae Tipple; 1981-08-01 to 1983-04-20; source msha-controller-operator-history
- **controller_controls_operator:** Michael P  Perilli → Idaho Screening Company; 1981-08-01 to 1983-04-20; source msha-controller-operator-history
- **operator_operates_mine:** Idaho Screening Company → Mae Tipple; 1983-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cline Jack → Mae Tipple; 1983-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cline Jack → Idaho Screening Company; 1983-04-21 to current/open; source msha-controller-operator-history