# Relationship history for MSHA mine 3301398

Current hierarchy: **Olen Corporation → The Olen Corporation → Aurora Plant**

- 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:** Schloss Materials Company → Aurora Plant; 1978-03-09 to 2004-07-12; source msha-controller-operator-history
- **controller_controls_mine:** Raymond E  Schloss → Aurora Plant; 1978-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Raymond E  Schloss → Schloss Materials Company; 1978-03-09 to 2004-07-12; source msha-controller-operator-history
- **controller_controls_mine:** Olen Corporation → Aurora Plant; 1983-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Roger J  Schuck → Aurora Plant; 1996-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rockwell Sand & Gravel, LLC → Aurora Plant; 2004-07-13 to 2005-07-17; source msha-controller-operator-history
- **controller_controls_operator:** Roger J  Schuck → Rockwell Sand & Gravel, LLC; 2004-07-13 to 2005-07-17; source msha-controller-operator-history
- **operator_operates_mine:** Aurora Aggregate Supply → Aurora Plant; 2005-07-18 to 2008-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Dale A Gotshell → Aurora Plant; 2005-07-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dale A Gotshell → Aurora Aggregate Supply; 2005-07-18 to 2008-05-19; source msha-controller-operator-history
- **operator_operates_mine:** The Olen Corporation → Aurora Plant; 2008-05-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Olen Corporation → The Olen Corporation; 2008-05-20 to current/open; source msha-controller-operator-history