# Relationship history for MSHA mine 1601403

Current hierarchy: **R Lance  West → Cash Sand & Gravel Inc. → Easterly Plant**

- 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:** Maxwell L  Johnson III et al → Easterly Plant; 1998-10-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bayou Aggregate Materials → Easterly Plant; 2002-11-19 to 2004-03-14; source msha-controller-operator-history
- **controller_controls_mine:** T Eric  Johnson → Easterly Plant; 2002-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** T Eric  Johnson → Bayou Aggregate Materials; 2002-11-19 to 2004-03-14; source msha-controller-operator-history
- **operator_operates_mine:** Gulf Coast Gravel Inc → Easterly Plant; 2004-03-15 to 2007-02-22; source msha-controller-operator-history
- **controller_controls_operator:** Maxwell L  Johnson III et al → Gulf Coast Gravel Inc; 2004-03-15 to 2007-02-22; source msha-controller-operator-history
- **operator_operates_mine:** West Industries, Inc. → Easterly Plant; 2007-02-23 to 2007-06-30; source msha-controller-operator-history
- **controller_controls_mine:** R Lance  West → Easterly Plant; 2007-02-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** R Lance  West → West Industries, Inc.; 2007-02-23 to 2007-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Cash Sand & Gravel Inc. → Easterly Plant; 2007-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** R Lance  West → Easterly Plant; 2007-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** R Lance  West → Cash Sand & Gravel Inc.; 2007-07-01 to current/open; source msha-controller-operator-history