# Relationship history for MSHA mine 2902126

Current hierarchy: **Travis  Cline; Bryce  Kidd → K Barnett & Sons Inc → Screening Unit**

- 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:** Ken  Barnett et al → Screening Unit; 1950-01-01 to 2015-03-30; source msha-controller-operator-history
- **operator_operates_mine:** K Barnett & Sons Inc → Screening Unit; 1994-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ken  Barnett et al → K Barnett & Sons Inc; 1994-02-01 to 2015-03-30; source msha-controller-operator-history
- **controller_controls_mine:** James  Eliason et al → Screening Unit; 2015-03-31 to 2026-01-13; source msha-controller-operator-history
- **controller_controls_operator:** James  Eliason et al → K Barnett & Sons Inc; 2015-03-31 to 2026-01-13; source msha-controller-operator-history
- **controller_controls_operator:** Gordon  Crawley et al → K Barnett & Sons Inc; 2015-03-31 to 2026-01-13; source msha-controller-operator-history
- **controller_controls_mine:** Bryce  Kidd et al → Screening Unit; 2026-01-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bryce  Kidd et al → K Barnett & Sons Inc; 2026-01-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Travis  Cline et al → K Barnett & Sons Inc; 2026-01-14 to current/open; source msha-controller-operator-history