# Relationship history for MSHA mine 0403008

Current hierarchy: **James Hardie Industries Ltd → Victorville Industrial Minerals → Atlas Mine**

- 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:** Vinnell Mining & Minerals Corp → Atlas Mine; 1950-01-01 to 1990-09-26; source msha-controller-operator-history
- **controller_controls_mine:** Vinnell Corp → Atlas Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vinnell Corp → Vinnell Mining & Minerals Corp; 1950-01-01 to 1990-09-26; source msha-controller-operator-history
- **operator_operates_mine:** Victorville Industrial Minerals → Atlas Mine; 1990-09-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James Hardie Industries Ltd → Atlas Mine; 1990-09-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James Hardie Industries Ltd → Victorville Industrial Minerals; 1990-09-27 to current/open; source msha-controller-operator-history