# Relationship history for MSHA mine 1700876

Current hierarchy: **Dana  Goldberg; Mark J  O'Brien → Goldmark LLC → Goldmark LLC**

- 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:** Goldmark LLC → Goldmark LLC; 2011-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dana  Goldberg et al → Goldmark LLC; 2011-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dana  Goldberg et al → Goldmark LLC; 2011-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark J  O'Brien et al → Goldmark LLC; 2011-09-15 to current/open; source msha-controller-operator-history