# Relationship history for MSHA mine 1500576

Current hierarchy: **Vandagriff Glen Doil → G V Coal Company → 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:** Blanton Coal Company → No 2 Mine; 1950-01-01 to 1975-11-24; source msha-controller-operator-history
- **controller_controls_mine:** Blanton Jerry & Melvin → No 2 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blanton Jerry & Melvin → Blanton Coal Company; 1950-01-01 to 1975-11-24; source msha-controller-operator-history
- **controller_controls_mine:** Bradford Mike → No 2 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bradford Coal Company Inc → No 2 Mine; 1975-11-25 to 1979-05-16; source msha-controller-operator-history
- **controller_controls_operator:** Bradford Mike → Bradford Coal Company Inc; 1975-11-25 to 1979-05-16; source msha-controller-operator-history
- **operator_operates_mine:** Cranks Coal & Energy Inc → No 2 Mine; 1979-05-17 to 1981-02-22; source msha-controller-operator-history
- **controller_controls_mine:** Fee Kernie → No 2 Mine; 1979-05-17 to 1981-02-22; source msha-controller-operator-history
- **controller_controls_operator:** Fee Kernie → Cranks Coal & Energy Inc; 1979-05-17 to 1981-02-22; source msha-controller-operator-history
- **operator_operates_mine:** Cranks Coal & Energy Corp → No 2 Mine; 1981-02-23 to 1981-05-11; source msha-controller-operator-history
- **controller_controls_mine:** Charles  Turner → No 2 Mine; 1981-02-23 to 1981-05-11; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Turner → Cranks Coal & Energy Corp; 1981-02-23 to 1981-05-11; source msha-controller-operator-history
- **controller_controls_mine:** Vandagriff Glen Doil → No 2 Mine; 1981-02-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** G V Coal Company → No 2 Mine; 1981-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vandagriff Glen Doil → G V Coal Company; 1981-05-12 to current/open; source msha-controller-operator-history