# Relationship history for MSHA mine 3401367

Current hierarchy: **Greg  Jeter; Darrin  Kline → Cowboy Crushing LLC → PORTABLE #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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Hodges Trucking Company Inc → PORTABLE #1; 1981-02-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Western Plains Materials → PORTABLE #1; 1982-10-01 to 2001-02-20; source msha-controller-operator-history
- **controller_controls_operator:** Hodges Trucking Company Inc → Western Plains Materials; 1982-10-01 to 2001-02-20; source msha-controller-operator-history
- **operator_operates_mine:** Cowboy Crushing LLC → PORTABLE #1; 2001-02-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Darrin  Kline  et al → PORTABLE #1; 2001-02-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darrin  Kline  et al → Cowboy Crushing LLC; 2001-02-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Jeter  et al → Cowboy Crushing LLC; 2001-02-21 to current/open; source msha-controller-operator-history