# Relationship history for MSHA mine 1101627

Current hierarchy: **Michael N  Cullinan; James P  Bruner → Rowe Construction Company-Div/R A Cullinan & Son → Ryan Pit No 39**

- 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:** Rowe Construction Company-Div/R A Cullinan & Son → Ryan Pit No 39; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James P  Bruner et al → Ryan Pit No 39; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James P  Bruner et al → Rowe Construction Company-Div/R A Cullinan & Son; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael N  Cullinan et al → Rowe Construction Company-Div/R A Cullinan & Son; 1950-01-01 to current/open; source msha-controller-operator-history