# Relationship history for MSHA mine 0801253

Current hierarchy: **Nick T  Stewart → Stewart Mining Industries, Inc. → Jasper Pit**

- 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

- **controller_controls_mine:** Nick T  Stewart → Jasper Pit; 1991-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Angelo'S Aggregate Materials Ltd → Jasper Pit; 1998-01-01 to 2003-02-11; source msha-controller-operator-history
- **controller_controls_mine:** Angelo E  Iafrate  et al → Jasper Pit; 1998-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Angelo E  Iafrate  et al → Angelo'S Aggregate Materials Ltd; 1998-01-01 to 2003-02-11; source msha-controller-operator-history
- **operator_operates_mine:** Stewart Mining Industries, Inc. → Jasper Pit; 2003-02-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nick T  Stewart → Stewart Mining Industries, Inc.; 2003-02-12 to current/open; source msha-controller-operator-history