# Relationship history for MSHA mine 1401598

Current hierarchy: **James D  Holland → Holland Corp. Inc. → Olathe 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

- **controller_controls_mine:** James D  Holland  et al → Olathe Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Holland Corp. Inc. → Olathe Mine; 1996-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James D  Holland  et al → Holland Corp. Inc.; 1996-08-01 to current/open; source msha-controller-operator-history