# Relationship history for MSHA mine 0405704

Current hierarchy: **Brad  Slender; Darwin  Christ; K Michael  Hickerson → BCJ Sand and Rock Inc → BCJ Mobile**

- 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:** James Bradley  Slender → BCJ Mobile; 2002-12-19 to 2018-04-29; source msha-controller-operator-history
- **operator_operates_mine:** BCJ Sand and Rock Inc → BCJ Mobile; 2007-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James Bradley  Slender → BCJ Sand and Rock Inc; 2007-01-16 to 2018-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Brad  Slender et al → BCJ Mobile; 2018-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad  Slender et al → BCJ Sand and Rock Inc; 2018-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** K Michael  Hickerson et al → BCJ Sand and Rock Inc; 2018-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darwin  Christ et al → BCJ Sand and Rock Inc; 2018-04-30 to current/open; source msha-controller-operator-history