# Relationship history for MSHA mine 1700881

Current hierarchy: **Brian  Ireland; Kim R  Pelletier → On Site Developer's → On Site Developer's**

- 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:** On Site Developer's → On Site Developer's; 2011-10-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kim R  Pelletier et al → On Site Developer's; 2011-10-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kim R  Pelletier et al → On Site Developer's; 2011-10-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian  Ireland et al → On Site Developer's; 2011-10-19 to current/open; source msha-controller-operator-history