# Relationship history for MSHA mine 1901315

Current hierarchy: **David M Walsh → Feeney Corp. → Feeney Corp. Portable #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:** Feeney Corp. → Feeney Corp. Portable #1; 2022-12-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David M Walsh → Feeney Corp. Portable #1; 2022-12-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David M Walsh → Feeney Corp.; 2022-12-19 to current/open; source msha-controller-operator-history