# Relationship history for MSHA mine 3503269

Current hierarchy: **Jennifer  Humbert; Troy A  Humbert → Humbert Asphalt Inc → Portable Crusher #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

- **operator_operates_mine:** Humbert Construction Inc → Portable Crusher #1; 1986-08-01 to 1998-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Sam  Humbert → Portable Crusher #1; 1986-08-01 to 1998-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Sam  Humbert → Humbert Construction Inc; 1986-08-01 to 1998-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Humbert Asphalt Inc → Portable Crusher #1; 1998-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Troy  Humbert et al → Portable Crusher #1; 1998-03-01 to 2020-01-06; source msha-controller-operator-history
- **controller_controls_operator:** Troy  Humbert et al → Humbert Asphalt Inc; 1998-03-01 to 2020-01-06; source msha-controller-operator-history
- **controller_controls_operator:** Dan  Humbert et al → Humbert Asphalt Inc; 1998-03-01 to 2020-01-06; source msha-controller-operator-history
- **controller_controls_mine:** Troy A  Humbert et al → Portable Crusher #1; 2020-01-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Troy A  Humbert et al → Humbert Asphalt Inc; 2020-01-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jennifer  Humbert et al → Humbert Asphalt Inc; 2020-01-07 to current/open; source msha-controller-operator-history