# Relationship history for MSHA mine 3610107

Current hierarchy: **Snyder Associated Companies Inc → ALLEGHENY MINERAL CORPORATION → BISON MINE**

- 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:** Snyder Associated Companies Inc → BISON MINE; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Allegheny Mineral Corporation → BISON MINE; 2014-06-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Snyder Associated Companies Inc → Allegheny Mineral Corporation; 2014-06-25 to current/open; source msha-controller-operator-history