# Relationship history for MSHA mine 3601241

Current hierarchy: **Mark E  Strishock; Stephen A  Strishock → STRISHOCK LLC → ROCKTON/SHAFFER 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

- **operator_operates_mine:** Strishock LLC → ROCKTON/SHAFFER MINE; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mark E  Strishock et al → ROCKTON/SHAFFER MINE; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark E  Strishock et al → Strishock LLC; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephen A  Strishock et al → Strishock LLC; 1950-01-01 to current/open; source msha-controller-operator-history