# Relationship history for MSHA mine 2602221

Current hierarchy: **Cemex S A → Cemex → Blm Pit -Hwy 60**

- 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:** CSR Ltd → Blm Pit -Hwy 60; 1990-02-02 to 2003-03-31; source msha-controller-operator-history
- **operator_operates_mine:** H W W T Inc → Blm Pit -Hwy 60; 1992-10-01 to 1996-10-23; source msha-controller-operator-history
- **controller_controls_mine:** Lynn  Morgan → Blm Pit -Hwy 60; 1992-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lynn  Morgan → H W W T Inc; 1992-10-01 to 1996-10-23; source msha-controller-operator-history
- **operator_operates_mine:** Pahrump Concrete, Inc. → Blm Pit -Hwy 60; 1996-10-24 to 2005-03-10; source msha-controller-operator-history
- **controller_controls_mine:** Daniel I Daffer → Blm Pit -Hwy 60; 1996-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel I Daffer → Pahrump Concrete, Inc.; 1996-10-24 to 2005-03-10; source msha-controller-operator-history
- **controller_controls_mine:** Rinker Group Ltd → Blm Pit -Hwy 60; 2003-04-01 to 2007-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Cemex → Blm Pit -Hwy 60; 2005-03-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rinker Group Ltd → Cemex; 2005-03-11 to 2007-07-09; source msha-controller-operator-history
- **controller_controls_operator:** CSR Ltd → Cemex; 2005-03-11 to 2003-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Blm Pit -Hwy 60; 2007-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Cemex; 2007-07-10 to current/open; source msha-controller-operator-history