# Relationship history for MSHA mine 1002118

Current hierarchy: **Grant A  Brackebusch → New Jersey Mining Co. → Silver Strand Mine**

- 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:** Grant A  Brackebusch et al → Silver Strand Mine; 1995-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** New Jersey Mining Co. → Silver Strand Mine; 2007-05-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Grant A  Brackebusch et al → New Jersey Mining Co.; 2007-05-25 to current/open; source msha-controller-operator-history