# Relationship history for MSHA mine 0203016

Current hierarchy: **Jason  Fann; Michael  Fann → Fann Contracting, Inc. → Portable Plant #1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Elaine P  Fann → Portable Plant #1; 1991-05-01 to 2003-05-20; source msha-controller-operator-history
- **operator_operates_mine:** Fann Contracting, Inc. → Portable Plant #1; 2003-05-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Fann → Portable Plant #1; 2003-05-21 to 2023-12-20; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Fann → Fann Contracting, Inc.; 2003-05-21 to 2023-12-20; source msha-controller-operator-history
- **controller_controls_operator:** Elaine P  Fann → Fann Contracting, Inc.; 2003-05-21 to 2003-05-20; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Fann et al → Portable Plant #1; 2023-12-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Fann et al → Fann Contracting, Inc.; 2023-12-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason  Fann et al → Fann Contracting, Inc.; 2023-12-21 to current/open; source msha-controller-operator-history