# Relationship history for MSHA mine 3602227

Current hierarchy: **Leonard  Chapleski; Walter  Folger → Chapleski & Folger Partners → Locust Gap Bank**

- 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:** Ranshaw Transportation & Auto Wreckers Company → Locust Gap Bank; 1950-01-01 to 1978-06-14; source msha-controller-operator-history
- **controller_controls_mine:** Walter  Folger et al → Locust Gap Bank; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Walter  Folger et al → Ranshaw Transportation & Auto Wreckers Company; 1950-01-01 to 1978-06-14; source msha-controller-operator-history
- **controller_controls_operator:** Leonard  Chapleski et al → Ranshaw Transportation & Auto Wreckers Company; 1950-01-01 to 1978-06-14; source msha-controller-operator-history
- **controller_controls_mine:** Larry  Gordon → Locust Gap Bank; 1977-12-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Churchill Coal Corp → Locust Gap Bank; 1978-06-15 to 1980-08-20; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Gordon → Churchill Coal Corp; 1978-06-15 to 1980-08-20; source msha-controller-operator-history
- **operator_operates_mine:** Chapleski & Folger Partners → Locust Gap Bank; 1980-08-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Leonard  Chapleski et al → Locust Gap Bank; 1980-08-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Leonard  Chapleski et al → Chapleski & Folger Partners; 1980-08-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Walter  Folger et al → Chapleski & Folger Partners; 1980-08-21 to current/open; source msha-controller-operator-history