# Relationship history for MSHA mine 4407323

Current hierarchy: **Todd  Bryant → Stoney Creek Materials LLC → Stoney Creek Materials**

- 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:** Shoreline Materials, LLC → Stoney Creek Materials; 2014-06-16 to 2018-06-26; source msha-controller-operator-history
- **controller_controls_mine:** Ben  Chikkaswamy → Stoney Creek Materials; 2014-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ben  Chikkaswamy → Shoreline Materials, LLC; 2014-06-16 to 2018-06-26; source msha-controller-operator-history
- **operator_operates_mine:** Sam's Sand and Gravel LLC → Stoney Creek Materials; 2018-06-27 to 2020-03-16; source msha-controller-operator-history
- **controller_controls_mine:** Carolyn  Shands et al → Stoney Creek Materials; 2018-06-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carolyn  Shands et al → Sam's Sand and Gravel LLC; 2018-06-27 to 2020-03-16; source msha-controller-operator-history
- **controller_controls_operator:** Samuel H Shands et al → Sam's Sand and Gravel LLC; 2018-06-27 to 2020-03-16; source msha-controller-operator-history
- **operator_operates_mine:** Stoney Creek Materials LLC → Stoney Creek Materials; 2020-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Todd  Bryant → Stoney Creek Materials; 2020-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Todd  Bryant → Stoney Creek Materials LLC; 2020-03-17 to current/open; source msha-controller-operator-history