# Relationship history for MSHA mine 0405222

Current hierarchy: **Trinity Alps Resources Inc. → Gold Run Enterprises LLC → Discovery Day 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:** G W Z Management Company Inc → Discovery Day Mine; 1993-09-01 to 1993-11-28; source msha-controller-operator-history
- **controller_controls_mine:** Mark E  Gavard et al → Discovery Day Mine; 1993-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark E  Gavard et al → G W Z Management Company Inc; 1993-09-01 to 1993-11-28; source msha-controller-operator-history
- **controller_controls_operator:** Thomas  Nicholas et al → G W Z Management Company Inc; 1993-09-01 to 1993-11-28; source msha-controller-operator-history
- **operator_operates_mine:** Sky Scientific Mining & Processing Inc → Discovery Day Mine; 1993-11-29 to 1994-03-28; source msha-controller-operator-history
- **controller_controls_mine:** Dorow Art → Discovery Day Mine; 1993-11-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dorow Art → Sky Scientific Mining & Processing Inc; 1993-11-29 to 1994-03-28; source msha-controller-operator-history
- **operator_operates_mine:** G W Z Management Company Inc → Discovery Day Mine; 1994-03-29 to 2004-07-26; source msha-controller-operator-history
- **controller_controls_operator:** Mark E  Gavard et al → G W Z Management Company Inc; 1994-03-29 to 2004-07-26; source msha-controller-operator-history
- **controller_controls_operator:** Thomas  Nicholas et al → G W Z Management Company Inc; 1994-03-29 to 2004-07-26; source msha-controller-operator-history
- **operator_operates_mine:** Discovery Day LLC → Discovery Day Mine; 2004-07-27 to 2006-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Patrick A  Fagen et al → Discovery Day Mine; 2004-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patrick A  Fagen et al → Discovery Day LLC; 2004-07-27 to 2006-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Merendon Mining (California) Inc → Discovery Day Mine; 2006-02-01 to 2009-12-07; source msha-controller-operator-history
- **controller_controls_mine:** Merendon Mining (Nevada) Inc → Discovery Day Mine; 2006-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Merendon Mining (Nevada) Inc → Merendon Mining (California) Inc; 2006-02-01 to 2009-12-07; source msha-controller-operator-history
- **operator_operates_mine:** Gold Run Enterprises LLC → Discovery Day Mine; 2009-12-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Trinity Alps Resources Inc. → Discovery Day Mine; 2009-12-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Trinity Alps Resources Inc. → Gold Run Enterprises LLC; 2009-12-08 to current/open; source msha-controller-operator-history