# Relationship history for MSHA mine 3003401

Current hierarchy: **THOMAS H HOYTE → HOYTE'S CONCRETE PRODS. INC. → TOMAS' 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

- **operator_operates_mine:** HOYTE'S CONCRETE PRODS. INC. → TOMAS' PIT; 2002-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** THOMAS H HOYTE → TOMAS' PIT; 2002-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** THOMAS H HOYTE → HOYTE'S CONCRETE PRODS. INC.; 2002-05-15 to current/open; source msha-controller-operator-history