# Relationship history for MSHA mine 1900554

Current hierarchy: **Karen  Hubacz; Jodi-Ann  Hubacz; Nancy  Mason → Bond Construction Corp → Bond Construction Corp**

- 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:** Bond Construction Corp → Bond Construction Corp; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joseph  Hubacz → Bond Construction Corp; 1950-01-01 to 2021-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Hubacz → Bond Construction Corp; 1950-01-01 to 2021-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Nancy  Mason et al → Bond Construction Corp; 2022-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nancy  Mason et al → Bond Construction Corp; 2022-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Karen  Hubacz et al → Bond Construction Corp; 2022-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jodi-Ann  Hubacz et al → Bond Construction Corp; 2022-01-01 to current/open; source msha-controller-operator-history