# Relationship history for MSHA mine 0901161

Current hierarchy: **Charles S  Luck IV → Stephens Industries, LLC → Luck Stone Atlanta Stephens 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Stephens Industries, LLC → Luck Stone Atlanta Stephens Plant; 2005-09-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stephens Holding Incorporated → Luck Stone Atlanta Stephens Plant; 2005-09-14 to 2018-09-27; source msha-controller-operator-history
- **controller_controls_operator:** Stephens Holding Incorporated → Stephens Industries, LLC; 2005-09-14 to 2018-09-27; source msha-controller-operator-history
- **controller_controls_mine:** Charles S  Luck IV  et al → Luck Stone Atlanta Stephens Plant; 2018-09-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles S  Luck IV  et al → Stephens Industries, LLC; 2018-09-28 to current/open; source msha-controller-operator-history