# Relationship history for MSHA mine 3605876

Current hierarchy: **Scicchitano Patsy → Coal Processing Inc → Calumet Coal Washer**

- 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:** Mc Carthy Bros Inc → Calumet Coal Washer; 1975-09-15 to 1976-08-22; source msha-controller-operator-history
- **controller_controls_mine:** Mc Carthy Bros Inc → Calumet Coal Washer; 1975-09-15 to 1976-08-22; source msha-controller-operator-history
- **controller_controls_operator:** Mc Carthy Bros Inc → Mc Carthy Bros Inc; 1975-09-15 to 1976-08-22; source msha-controller-operator-history
- **operator_operates_mine:** Coal Processing Limited → Calumet Coal Washer; 1976-08-23 to 1977-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Pinkman Jim → Calumet Coal Washer; 1976-08-23 to 1977-09-14; source msha-controller-operator-history
- **controller_controls_operator:** Pinkman Jim → Coal Processing Limited; 1976-08-23 to 1977-09-14; source msha-controller-operator-history
- **operator_operates_mine:** Coal Processing Limited → Calumet Coal Washer; 1977-09-15 to 1983-11-14; source msha-controller-operator-history
- **controller_controls_mine:** Coal Processing Inc-Oceanic Exploration Et Al → Calumet Coal Washer; 1977-09-15 to 1983-11-14; source msha-controller-operator-history
- **controller_controls_operator:** Coal Processing Inc-Oceanic Exploration Et Al → Coal Processing Limited; 1977-09-15 to 1983-11-14; source msha-controller-operator-history
- **operator_operates_mine:** Coal Processing Inc → Calumet Coal Washer; 1983-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Scicchitano Patsy → Calumet Coal Washer; 1983-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scicchitano Patsy → Coal Processing Inc; 1983-11-15 to current/open; source msha-controller-operator-history