# Relationship history for MSHA mine 3610049

Current hierarchy: **Zane G  Salsman → Z. Salsman Company → Lacey Street Quarry #2**

- 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:** Randy  Cole → Lacey Street Quarry #2; 2010-03-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ranwood, Inc. → Lacey Street Quarry #2; 2013-04-01 to 2014-07-01; source msha-controller-operator-history
- **controller_controls_operator:** Randy  Cole → Ranwood, Inc.; 2013-04-01 to 2014-07-01; source msha-controller-operator-history
- **operator_operates_mine:** Z. Salsman Company → Lacey Street Quarry #2; 2014-07-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Zane G  Salsman → Lacey Street Quarry #2; 2014-07-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Zane G  Salsman → Z. Salsman Company; 2014-07-02 to current/open; source msha-controller-operator-history