# Relationship history for MSHA mine 3002253

Current hierarchy: **CRH PLC → Callanan Industries Inc → MAYBROOK MATERIALS PLANT #80**

- 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

- **operator_operates_mine:** Neelytown Development Corp → MAYBROOK MATERIALS PLANT #80; 1950-01-01 to 1983-04-20; source msha-controller-operator-history
- **controller_controls_mine:** New York Bituminous Corp → MAYBROOK MATERIALS PLANT #80; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** New York Bituminous Corp → Neelytown Development Corp; 1950-01-01 to 1983-04-20; source msha-controller-operator-history
- **operator_operates_mine:** Maybrook Materials Inc → MAYBROOK MATERIALS PLANT #80; 1983-04-21 to 1996-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Nick F  Badami → MAYBROOK MATERIALS PLANT #80; 1983-04-21 to 1996-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Nick F  Badami → Maybrook Materials Inc; 1983-04-21 to 1996-05-31; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → MAYBROOK MATERIALS PLANT #80; 1985-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Callanan Industries Inc → MAYBROOK MATERIALS PLANT #80; 1996-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Callanan Industries Inc; 1996-06-01 to current/open; source msha-controller-operator-history