# Relationship history for MSHA mine 1513769

Current hierarchy: **Moore Harry E → Lakeshore Equipment Company Inc → Poplar Creek #1**

- 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:** Crawford Lawrence & Dennis Ray → Poplar Creek #1; 1980-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Laray Inc → Poplar Creek #1; 1982-10-01 to 1985-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Crawford Lawrence & Dennis Ray → Laray Inc; 1982-10-01 to 1985-03-14; source msha-controller-operator-history
- **operator_operates_mine:** Aspen Mining Company → Poplar Creek #1; 1985-03-15 to 1986-02-26; source msha-controller-operator-history
- **controller_controls_mine:** Mills Randy Et Al → Poplar Creek #1; 1985-03-15 to 1986-02-26; source msha-controller-operator-history
- **controller_controls_operator:** Mills Randy Et Al → Aspen Mining Company; 1985-03-15 to 1986-02-26; source msha-controller-operator-history
- **operator_operates_mine:** Poplar Creek Coal Company Inc → Poplar Creek #1; 1986-02-27 to 1987-08-17; source msha-controller-operator-history
- **controller_controls_mine:** Moore Richard C → Poplar Creek #1; 1986-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Moore Richard C → Poplar Creek Coal Company Inc; 1986-02-27 to 1987-08-17; source msha-controller-operator-history
- **operator_operates_mine:** Lakeshore Equipment Company Inc → Poplar Creek #1; 1987-08-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Moore Harry E → Poplar Creek #1; 1987-08-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Moore Harry E → Lakeshore Equipment Company Inc; 1987-08-18 to current/open; source msha-controller-operator-history