# Relationship history for MSHA mine 0103228

Current hierarchy: **Stephen  Musolino → Sycamore Marble Co., Inc. → Sycamore Pit**

- 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:** Sycamore Marble Co., Inc. → Sycamore Pit; 2002-01-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stephen  Musolino → Sycamore Pit; 2002-01-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephen  Musolino → Sycamore Marble Co., Inc.; 2002-01-04 to current/open; source msha-controller-operator-history