# Relationship history for MSHA mine 2002875

Current hierarchy: **Michael J  Catenacci → Spruce Hill Aggregates → Spruce Hill Aggregates**

- 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:** National Asphalt Products Inc → Spruce Hill Aggregates; 1992-06-01 to 2011-07-29; source msha-controller-operator-history
- **controller_controls_mine:** Joseph E Catenacci → Spruce Hill Aggregates; 1992-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph E Catenacci → National Asphalt Products Inc; 1992-06-01 to 2011-07-29; source msha-controller-operator-history
- **operator_operates_mine:** Spruce Hill Aggregates → Spruce Hill Aggregates; 2011-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael J  Catenacci → Spruce Hill Aggregates; 2011-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael J  Catenacci → Spruce Hill Aggregates; 2011-07-30 to current/open; source msha-controller-operator-history