# Relationship history for MSHA mine 1514147

Current hierarchy: **Frederick James D & Anthony → Clay Construction → Associated Mining 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:** H L Davis Construction & Mining Inc → Associated Mining Inc; 1983-07-01 to 1983-10-02; source msha-controller-operator-history
- **controller_controls_mine:** Davis Hubert → Associated Mining Inc; 1983-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Davis Hubert → H L Davis Construction & Mining Inc; 1983-07-01 to 1983-10-02; source msha-controller-operator-history
- **operator_operates_mine:** Clay Construction → Associated Mining Inc; 1983-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Frederick James D & Anthony → Associated Mining Inc; 1983-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frederick James D & Anthony → Clay Construction; 1983-10-03 to current/open; source msha-controller-operator-history