# Relationship history for MSHA mine 3601745

Current hierarchy: **Leonard A  Rossi → Rossi Excavating Company → Hazleton Shaft-West**

- 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:** Jeddo-Highland Coal Company → Hazleton Shaft-West; 1950-01-01 to 1995-08-20; source msha-controller-operator-history
- **controller_controls_mine:** Pagnotti Enterprises Inc → Hazleton Shaft-West; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pagnotti Enterprises Inc → Jeddo-Highland Coal Company; 1950-01-01 to 1995-08-20; source msha-controller-operator-history
- **controller_controls_mine:** Leonard A  Rossi → Hazleton Shaft-West; 1983-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Devil'S Hole Inc → Hazleton Shaft-West; 1995-08-21 to 2010-01-25; source msha-controller-operator-history
- **controller_controls_mine:** Gene B  Gangloff → Hazleton Shaft-West; 2002-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gene B  Gangloff → Devil'S Hole Inc; 2002-05-14 to 2010-01-25; source msha-controller-operator-history
- **operator_operates_mine:** Rossi Excavating Company → Hazleton Shaft-West; 2010-01-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Leonard A  Rossi → Rossi Excavating Company; 2010-01-26 to current/open; source msha-controller-operator-history