# Relationship history for MSHA mine 2602283

Current hierarchy: **Cemex S A → Cemex → Moapa Quarry**

- 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 → Moapa Quarry; 1990-02-02 to 2003-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Barr Products → Moapa Quarry; 1996-01-01 to 2001-12-06; source msha-controller-operator-history
- **controller_controls_mine:** Edward  Riggs  et al → Moapa Quarry; 1996-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward  Riggs  et al → Barr Products; 1996-01-01 to 2001-12-06; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Riggs  et al → Barr Products; 1996-01-01 to 2001-12-06; source msha-controller-operator-history
- **operator_operates_mine:** Infiniton LLC → Moapa Quarry; 2001-12-07 to 2005-05-11; source msha-controller-operator-history
- **controller_controls_mine:** Darren C  Petersen → Moapa Quarry; 2001-12-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darren C  Petersen → Infiniton LLC; 2001-12-07 to 2005-05-11; source msha-controller-operator-history
- **controller_controls_mine:** Rinker Group Ltd → Moapa Quarry; 2003-04-01 to 2007-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Cemex → Moapa Quarry; 2005-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rinker Group Ltd → Cemex; 2005-05-12 to 2007-07-09; source msha-controller-operator-history
- **controller_controls_operator:** CSR Ltd → Cemex; 2005-05-12 to 2003-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Moapa Quarry; 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