# Relationship history for MSHA mine 4405310

Current hierarchy: **Vandyke Leon & James Messer → Punk Coal Corp → No 1 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

- **operator_operates_mine:** London Coal Corp → No 1 Mine; 1979-10-01 to 1980-08-10; source msha-controller-operator-history
- **controller_controls_mine:** Van Dyke James Ray Et Al → No 1 Mine; 1979-10-01 to 1980-08-10; source msha-controller-operator-history
- **controller_controls_operator:** Van Dyke James Ray Et Al → London Coal Corp; 1979-10-01 to 1980-08-10; source msha-controller-operator-history
- **operator_operates_mine:** Punk Coal Corp → No 1 Mine; 1980-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Vandyke Leon & James Messer → No 1 Mine; 1980-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vandyke Leon & James Messer → Punk Coal Corp; 1980-08-11 to current/open; source msha-controller-operator-history