# Relationship history for MSHA mine 0404568

Current hierarchy: **Barrick Gold Corp → Homestake Mining Company Of California → Mc Laughlin Exploration Decline (94)**

- 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:** Homestake Mining Company → Mc Laughlin Exploration Decline (94); 1950-01-01 to 2001-12-13; source msha-controller-operator-history
- **controller_controls_mine:** Homestake Mining Company → Mc Laughlin Exploration Decline (94); 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Homestake Mining Company → Mc Laughlin Exploration Decline (94); 1981-10-01 to 1994-03-17; source msha-controller-operator-history
- **controller_controls_operator:** Homestake Mining Company → Homestake Mining Company; 1981-10-01 to 1994-03-17; source msha-controller-operator-history
- **controller_controls_mine:** John  O'Brien et al → Mc Laughlin Exploration Decline (94); 1989-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Intermountain Mine Services Inc → Mc Laughlin Exploration Decline (94); 1994-03-18 to 1994-06-26; source msha-controller-operator-history
- **controller_controls_operator:** John  O'Brien et al → Intermountain Mine Services Inc; 1994-03-18 to 1994-06-26; source msha-controller-operator-history
- **controller_controls_operator:** David E  Drips et al → Intermountain Mine Services Inc; 1994-03-18 to 1994-06-26; source msha-controller-operator-history
- **operator_operates_mine:** Homestake Mining Company Of California → Mc Laughlin Exploration Decline (94); 1994-06-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Homestake Mining Company → Homestake Mining Company Of California; 1994-06-27 to 2001-12-13; source msha-controller-operator-history
- **controller_controls_mine:** Barrick Gold Corp → Mc Laughlin Exploration Decline (94); 2001-12-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barrick Gold Corp → Homestake Mining Company Of California; 2001-12-14 to current/open; source msha-controller-operator-history