# Relationship history for MSHA mine 4406489

Current hierarchy: **Funk Samuel J & Bascom S → C B S Land Company → #1 Strip**

- 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:** C B S Land Company → #1 Strip; 1988-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Funk Samuel J & Bascom S → #1 Strip; 1988-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Funk Samuel J & Bascom S → C B S Land Company; 1988-11-01 to current/open; source msha-controller-operator-history