# Relationship history for MSHA mine 4402828

Current hierarchy: **Kevin  Miles → OXERRA AMERICAS, INC. → 1 PIT AND MILL**

- 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:** Hoover Color Corp → 1 PIT AND MILL; 1950-01-01 to 2016-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Charles E  Hoover → 1 PIT AND MILL; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles E  Hoover → Hoover Color Corp; 1950-01-01 to 2016-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Oxerra Americas, Inc. → 1 PIT AND MILL; 2016-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kevin  Miles → 1 PIT AND MILL; 2016-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin  Miles → Oxerra Americas, Inc.; 2016-07-01 to current/open; source msha-controller-operator-history