# Relationship history for MSHA mine 1503934

Current hierarchy: **James J  Kocian → Ikerd-Bandy Company Inc → Ano #1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Ikerd-Bandy Company Inc → Ano #1; 1950-01-01 to 1985-02-14; source msha-controller-operator-history
- **controller_controls_mine:** Kaneb Services Inc → Ano #1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kaneb Services Inc → Ikerd-Bandy Company Inc; 1950-01-01 to 1985-02-14; source msha-controller-operator-history
- **operator_operates_mine:** Ikerd-Bandy Company Inc → Ano #1; 1985-02-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James J  Kocian et al → Ano #1; 1985-02-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James J  Kocian et al → Ikerd-Bandy Company Inc; 1985-02-15 to current/open; source msha-controller-operator-history