# Relationship history for MSHA mine 1400172

Current hierarchy: **James D  Holland → Holland Corp Inc → Mine #2**

- 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:** Holland Corp Inc → Mine #2; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James D  Holland  et al → Mine #2; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James D  Holland  et al → Holland Corp Inc; 1950-01-01 to current/open; source msha-controller-operator-history