# Relationship history for MSHA mine 3004139

Current hierarchy: **Town of Maryland-NY → TOWN OF MARYLAND → HEANEY 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:** Town of Maryland → HEANEY BANK; 2024-08-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Town of Maryland-NY → HEANEY BANK; 2024-08-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Town of Maryland-NY → Town of Maryland; 2024-08-27 to current/open; source msha-controller-operator-history