# Relationship history for MSHA mine 0502387

Current hierarchy: **Lance  Barker; Ken  Orvis → Orvis-Barker Mining → GOLDEN WONDER**

- 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:** Tesoro Mining Corp → GOLDEN WONDER; 1950-01-01 to 1980-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Tesoro Mining Corp → GOLDEN WONDER; 1950-01-01 to 1980-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Tesoro Mining Corp → Tesoro Mining Corp; 1950-01-01 to 1980-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Oro Plata Mining Inc → GOLDEN WONDER; 1980-08-01 to 1981-06-22; source msha-controller-operator-history
- **controller_controls_mine:** De Luche Don → GOLDEN WONDER; 1980-08-01 to 1987-07-06; source msha-controller-operator-history
- **controller_controls_operator:** De Luche Don → Oro Plata Mining Inc; 1980-08-01 to 1981-06-22; source msha-controller-operator-history
- **operator_operates_mine:** Mc Leroy Mining Company → GOLDEN WONDER; 1981-06-23 to 1984-09-19; source msha-controller-operator-history
- **controller_controls_mine:** Mc Leroy Robert W → GOLDEN WONDER; 1981-06-23 to 1984-09-19; source msha-controller-operator-history
- **controller_controls_operator:** Mc Leroy Robert W → Mc Leroy Mining Company; 1981-06-23 to 1984-09-19; source msha-controller-operator-history
- **operator_operates_mine:** Ritter Mining Company → GOLDEN WONDER; 1984-09-20 to 1986-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Ritter J D → GOLDEN WONDER; 1984-09-20 to 1986-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Ritter J D → Ritter Mining Company; 1984-09-20 to 1986-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Gold Star Mining Company → GOLDEN WONDER; 1986-05-01 to 1989-05-14; source msha-controller-operator-history
- **controller_controls_mine:** Energy Fuels Corp → GOLDEN WONDER; 1986-05-01 to 1989-05-14; source msha-controller-operator-history
- **controller_controls_operator:** Energy Fuels Corp → Gold Star Mining Company; 1986-05-01 to 1989-05-14; source msha-controller-operator-history
- **operator_operates_mine:** La Plata Joint Venture → GOLDEN WONDER; 1989-05-15 to 1991-08-18; source msha-controller-operator-history
- **controller_controls_mine:** Stagg Alan K → GOLDEN WONDER; 1989-05-15 to 1991-08-18; source msha-controller-operator-history
- **controller_controls_operator:** Stagg Alan K → La Plata Joint Venture; 1989-05-15 to 1991-08-18; source msha-controller-operator-history
- **operator_operates_mine:** Nordlander Mining → GOLDEN WONDER; 1991-08-19 to 1994-08-14; source msha-controller-operator-history
- **controller_controls_mine:** Nordlander Donald B → GOLDEN WONDER; 1991-08-19 to 1994-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Nordlander Donald B → Nordlander Mining; 1991-08-19 to 1994-08-14; source msha-controller-operator-history
- **operator_operates_mine:** Orvis-Barker Mining → GOLDEN WONDER; 1994-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lance  Barker  et al → GOLDEN WONDER; 1994-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lance  Barker  et al → Orvis-Barker Mining; 1994-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ken  Orvis  et al → Orvis-Barker Mining; 1994-08-15 to current/open; source msha-controller-operator-history