# Relationship history for MSHA mine 0202941

Current hierarchy: **Cemex S A → Cemex Construction Materials LP → HUNTER PORTABLE**

- 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:** RMC Group PLC → HUNTER PORTABLE; 1995-03-01 to 2005-08-30; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → HUNTER PORTABLE; 2001-07-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Chandler Ready Mix Inc → HUNTER PORTABLE; 2001-08-01 to 2006-01-25; source msha-controller-operator-history
- **controller_controls_operator:** RMC Group PLC → Chandler Ready Mix Inc; 2001-08-01 to 2005-08-30; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → HUNTER PORTABLE; 2005-08-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Chandler Ready Mix Inc; 2005-08-31 to 2006-01-25; source msha-controller-operator-history
- **operator_operates_mine:** Cemex Construction Materials LP → HUNTER PORTABLE; 2006-01-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Cemex Construction Materials LP; 2006-01-26 to current/open; source msha-controller-operator-history