# Relationship history for MSHA mine 1514657

Current hierarchy: **Potter Reed Sr → L & R Fuels Inc → No 2 Surface Mine**

- 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:** Potter Reed Sr → No 2 Surface Mine; 1977-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** L & R Fuels Inc → No 2 Surface Mine; 1984-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Potter Reed Sr → L & R Fuels Inc; 1984-06-01 to current/open; source msha-controller-operator-history