# Relationship history for MSHA mine 0103382

Current hierarchy: **Tim A  Gaddis; Ken S  Gordon → Sterling Materials Inc. → Sterling Materials Inc.**

- 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:** Triple S Partners, LLC → Sterling Materials Inc.; 2008-02-14 to 2008-06-15; source msha-controller-operator-history
- **controller_controls_mine:** William R  Springer et al → Sterling Materials Inc.; 2008-02-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William R  Springer et al → Triple S Partners, LLC; 2008-02-14 to 2008-06-15; source msha-controller-operator-history
- **controller_controls_operator:** Mark S  Holderfield et al → Triple S Partners, LLC; 2008-02-14 to 2008-06-15; source msha-controller-operator-history
- **operator_operates_mine:** Sterling Materials Inc. → Sterling Materials Inc.; 2008-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tim A  Gaddis et al → Sterling Materials Inc.; 2008-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim A  Gaddis et al → Sterling Materials Inc.; 2008-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ken S  Gordon et al → Sterling Materials Inc.; 2008-06-16 to current/open; source msha-controller-operator-history