# Relationship history for MSHA mine 2401892

Current hierarchy: **Timothy  Antonioli → A & A Mining Company → West Mayflower**

- 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:** A & A Mining Company → West Mayflower; 1989-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Timothy  Antonioli et al → West Mayflower; 1989-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy  Antonioli et al → A & A Mining Company; 1989-05-01 to current/open; source msha-controller-operator-history