# Relationship history for MSHA mine 0103086

Current hierarchy: **Robin A  Wade Jr → Superior Products, Inc → BENCHMARK**

- 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:** Robin A  Wade Jr → BENCHMARK; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Superior Products, Inc → BENCHMARK; 1996-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robin A  Wade Jr → Superior Products, Inc; 1996-08-01 to current/open; source msha-controller-operator-history