# Relationship history for MSHA mine 4201975

Current hierarchy: **Todd A Hughes; Scott G Hughes → Lakeview Rock Products, Inc. → Lakeview Rock Products, 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:** Lakeview Rock Products, Inc. → Lakeview Rock Products, Inc.; 1986-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Glenn E  Hughes → Lakeview Rock Products, Inc.; 1986-04-01 to 2015-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Glenn E  Hughes → Lakeview Rock Products, Inc.; 1986-04-01 to 2015-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Scott G Hughes et al → Lakeview Rock Products, Inc.; 2016-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott G Hughes et al → Lakeview Rock Products, Inc.; 2016-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Todd A Hughes et al → Lakeview Rock Products, Inc.; 2016-01-01 to current/open; source msha-controller-operator-history