# Relationship history for MSHA mine 4202740

Current hierarchy: **William Jeff  Newman; Mark  Newman → Newman Leasing → Elk Ridge 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

- **controller_controls_mine:** William Jeff  Newman et al → Elk Ridge Pit; 2020-03-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Newman Leasing → Elk Ridge Pit; 2022-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William Jeff  Newman et al → Newman Leasing; 2022-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Newman et al → Newman Leasing; 2022-05-12 to current/open; source msha-controller-operator-history