# Relationship history for MSHA mine 2602872

Current hierarchy: **Joseph  Malcarne; Robert  Ryan → Beach Mining LLC → Beach Mining, 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:** Beach Mining LLC → Beach Mining, LLC; 2022-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Big Sky 14 Investments Inc → Beach Mining, LLC; 2022-04-01 to 2026-01-11; source msha-controller-operator-history
- **controller_controls_operator:** Big Sky 14 Investments Inc → Beach Mining LLC; 2022-04-01 to 2026-01-11; source msha-controller-operator-history
- **controller_controls_mine:** Joseph  Malcarne et al → Beach Mining, LLC; 2026-01-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Malcarne et al → Beach Mining LLC; 2026-01-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Ryan et al → Beach Mining LLC; 2026-01-12 to current/open; source msha-controller-operator-history