# Relationship history for MSHA mine 3503817

Current hierarchy: **Wade  Aylett; Debora L  Aylett → Rock It LLC → Rock It**

- 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:** Rock It LLC → Rock It; 2014-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Debora L  Aylett et al → Rock It; 2014-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Debora L  Aylett et al → Rock It LLC; 2014-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wade  Aylett et al → Rock It LLC; 2014-05-15 to current/open; source msha-controller-operator-history