# Relationship history for MSHA mine 3607702

Current hierarchy: **John P  Shingara → F S Coal → Slope No 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

- **operator_operates_mine:** F S Coal → Slope No 1; 1985-06-01 to 1987-04-22; source msha-controller-operator-history
- **controller_controls_mine:** Allen Robert Et Al → Slope No 1; 1985-06-01 to 1987-04-22; source msha-controller-operator-history
- **controller_controls_operator:** Allen Robert Et Al → F S Coal; 1985-06-01 to 1987-04-22; source msha-controller-operator-history
- **operator_operates_mine:** F S Coal → Slope No 1; 1987-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John P  Shingara → Slope No 1; 1987-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John P  Shingara → F S Coal; 1987-04-23 to current/open; source msha-controller-operator-history