# Relationship history for MSHA mine 2302050

Current hierarchy: **Frye John W → J & L Redi Mix Inc → J & L REDI MIX INC**

- 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:** J & L Ready Mix → J & L REDI MIX INC; 1992-01-01 to 1992-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Givens John → J & L REDI MIX INC; 1992-01-01 to 1992-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Givens John → J & L Ready Mix; 1992-01-01 to 1992-12-31; source msha-controller-operator-history
- **operator_operates_mine:** J & L Redi Mix Inc → J & L REDI MIX INC; 1993-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Frye John W → J & L REDI MIX INC; 1993-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frye John W → J & L Redi Mix Inc; 1993-01-01 to current/open; source msha-controller-operator-history