# Relationship history for MSHA mine 3401930

Current hierarchy: **Summit Materials LLC → Alan Ritchey Materials → Pope's Point**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Mark  Buster et al → Pope's Point; 1994-03-01 to 2011-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Alan Ritchey Materials Company LC → Pope's Point; 2004-02-20 to 2017-09-19; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Stroup et al → Pope's Point; 2004-02-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Stroup et al → Alan Ritchey Materials Company LC; 2004-02-20 to 2017-09-19; source msha-controller-operator-history
- **controller_controls_operator:** Bobby  Ritchey et al → Alan Ritchey Materials Company LC; 2004-02-20 to 2017-09-19; source msha-controller-operator-history
- **controller_controls_mine:** Summit Materials LLC → Pope's Point; 2011-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Alan Ritchey Materials → Pope's Point; 2017-09-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Summit Materials LLC → Alan Ritchey Materials; 2017-09-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Buster et al → Alan Ritchey Materials; 2017-09-20 to 2011-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Eddie G  Smith et al → Alan Ritchey Materials; 2017-09-20 to 2011-01-31; source msha-controller-operator-history