# Relationship history for MSHA mine 3605441

Current hierarchy: **Tomaine Carl → Carrier Coal Company Inc → Gravity Slope 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

- **controller_controls_mine:** Tomaine Carl → Gravity Slope Bank; 1970-01-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carrier Coal Company Inc → Gravity Slope Bank; 1975-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tomaine Carl → Carrier Coal Company Inc; 1975-02-01 to current/open; source msha-controller-operator-history