# Relationship history for MSHA mine 0203339

Current hierarchy: **Matt  Klump → KLUMP MATERIALS → BUCKEYE PIT**

- 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:** Matt  Klump → BUCKEYE PIT; 2011-03-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** KLUMP MATERIALS → BUCKEYE PIT; 2014-07-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matt  Klump → KLUMP MATERIALS; 2014-07-22 to current/open; source msha-controller-operator-history