# Relationship history for MSHA mine 1511943

Current hierarchy: **Jamestown Resources Inc → Ex Coal Sales Inc → No 1 Surface**

- 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:** Van Denhende Harry → No 1 Surface; 1979-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pelfrey & Rose → No 1 Surface; 1979-06-01 to 1980-02-27; source msha-controller-operator-history
- **controller_controls_mine:** Pelfrey Corbet & Harold Rose → No 1 Surface; 1979-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pelfrey Corbet & Harold Rose → Pelfrey & Rose; 1979-06-01 to 1980-02-27; source msha-controller-operator-history
- **operator_operates_mine:** Huntington Mining Company Inc → No 1 Surface; 1980-02-28 to 1981-02-17; source msha-controller-operator-history
- **controller_controls_operator:** Van Denhende Harry → Huntington Mining Company Inc; 1980-02-28 to 1981-02-17; source msha-controller-operator-history
- **operator_operates_mine:** Patrick Coal Company Inc → No 1 Surface; 1981-02-18 to 1981-11-23; source msha-controller-operator-history
- **controller_controls_mine:** Patrick James → No 1 Surface; 1981-02-18 to 1981-11-23; source msha-controller-operator-history
- **controller_controls_operator:** Patrick James → Patrick Coal Company Inc; 1981-02-18 to 1981-11-23; source msha-controller-operator-history
- **controller_controls_mine:** Jamestown Resources Inc → No 1 Surface; 1981-11-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ex Coal Sales Inc → No 1 Surface; 1981-11-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jamestown Resources Inc → Ex Coal Sales Inc; 1981-11-24 to current/open; source msha-controller-operator-history