# Relationship history for MSHA mine 0801325

Current hierarchy: **Michael J  Sadofski → Okeechobee Aggregates, Inc. → Okeechobee Aggregates, Inc. (Pit 2)**

- 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:** Michael J  Sadofski → Okeechobee Aggregates, Inc. (Pit 2); 2002-07-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Okeechobee Aggregates, Inc. → Okeechobee Aggregates, Inc. (Pit 2); 2003-02-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael J  Sadofski → Okeechobee Aggregates, Inc.; 2003-02-24 to current/open; source msha-controller-operator-history