# Relationship history for MSHA mine 1516135

Current hierarchy: **John  Harris → Berkeley Energy Corp → Berkeley Mine No 1**

- 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

- **controller_controls_mine:** Larry Ray  Justus → Berkeley Mine No 1; 1985-12-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Just-Us Coal Corp → Berkeley Mine No 1; 1987-08-01 to 1995-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Larry Ray  Justus → Just-Us Coal Corp; 1987-08-01 to 1995-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Berkeley Energy Corp → Berkeley Mine No 1; 1995-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John  Harris → Berkeley Mine No 1; 1995-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Harris → Berkeley Energy Corp; 1995-05-01 to current/open; source msha-controller-operator-history