# Relationship history for MSHA mine 4601576

Current hierarchy: **CONSOL Energy Inc → Itmann Coal Company → Itmann #3**

- 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:** Itmann Coal Company → Itmann #3; 1950-01-01 to 1985-08-22; source msha-controller-operator-history
- **controller_controls_mine:** Consolidation Coal Co-Bethlehem Steel Corp Et Al → Itmann #3; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Consolidation Coal Co-Bethlehem Steel Corp Et Al → Itmann Coal Company; 1950-01-01 to 1985-08-22; source msha-controller-operator-history
- **operator_operates_mine:** Itmann Coal Company → Itmann #3; 1985-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** CONSOL Energy Inc → Itmann #3; 1985-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CONSOL Energy Inc → Itmann Coal Company; 1985-08-23 to current/open; source msha-controller-operator-history