# Relationship history for MSHA mine 1508951

Current hierarchy: **Reffett Virgil → V & M Mining Company Of Paintsville Inc → No 2 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:** Dotson Coal Co Inc → No 2 Mine; 1975-01-01 to 1977-08-07; source msha-controller-operator-history
- **controller_controls_mine:** Dotson Andy → No 2 Mine; 1975-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dotson Andy → Dotson Coal Co Inc; 1975-01-01 to 1977-08-07; source msha-controller-operator-history
- **operator_operates_mine:** Glen Dotson Coal Company Inc → No 2 Mine; 1977-08-08 to 1978-07-13; source msha-controller-operator-history
- **controller_controls_mine:** Dotson Glen → No 2 Mine; 1977-08-08 to 1978-07-13; source msha-controller-operator-history
- **controller_controls_operator:** Dotson Glen → Glen Dotson Coal Company Inc; 1977-08-08 to 1978-07-13; source msha-controller-operator-history
- **operator_operates_mine:** V & M Mining Company Of Paintsville Inc → No 2 Mine; 1978-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Reffett Virgil Et Al → No 2 Mine; 1978-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reffett Virgil Et Al → V & M Mining Company Of Paintsville Inc; 1978-07-14 to current/open; source msha-controller-operator-history