# Relationship history for MSHA mine 3304758

Current hierarchy: **W Scott  Elliott → Marietta Industrial Enterprises Inc. → Reno**

- 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:** Marietta Industrial Enterprises Inc. → Reno; 2020-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** W Scott  Elliott et al → Reno; 2020-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** W Scott  Elliott et al → Marietta Industrial Enterprises Inc.; 2020-10-16 to current/open; source msha-controller-operator-history