# Relationship history for MSHA mine 1600810

Current hierarchy: **James  Creel → B & J Backhoe Service Inc → B & J GRAVEL-MAGEE PIT**

- 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:** Smith Sand & Gravel Company → B & J GRAVEL-MAGEE PIT; 1950-01-01 to 1999-05-16; source msha-controller-operator-history
- **controller_controls_mine:** Robert D  Smith → B & J GRAVEL-MAGEE PIT; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert D  Smith → Smith Sand & Gravel Company; 1950-01-01 to 1999-05-16; source msha-controller-operator-history
- **controller_controls_mine:** Stanley E  Creel → B & J GRAVEL-MAGEE PIT; 1995-06-01 to 2013-03-26; source msha-controller-operator-history
- **operator_operates_mine:** B & J Backhoe Service Inc → B & J GRAVEL-MAGEE PIT; 1999-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stanley E  Creel → B & J Backhoe Service Inc; 1999-05-17 to 2013-03-26; source msha-controller-operator-history
- **controller_controls_mine:** James  Creel → B & J GRAVEL-MAGEE PIT; 2013-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Creel → B & J Backhoe Service Inc; 2013-03-27 to current/open; source msha-controller-operator-history