# Relationship history for MSHA mine 3607894

Current hierarchy: **Sisti Domenick → Slickville Conservation Corp → Slickville Plant**

- 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:** International Coal Processing Corp → Slickville Plant; 1987-06-01 to 1989-07-23; source msha-controller-operator-history
- **controller_controls_mine:** Morris Frank → Slickville Plant; 1987-06-01 to 1989-07-23; source msha-controller-operator-history
- **controller_controls_operator:** Morris Frank → International Coal Processing Corp; 1987-06-01 to 1989-07-23; source msha-controller-operator-history
- **operator_operates_mine:** Slickville Conservation Corp → Slickville Plant; 1989-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sisti Domenick → Slickville Plant; 1989-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sisti Domenick → Slickville Conservation Corp; 1989-07-24 to current/open; source msha-controller-operator-history