# Relationship history for MSHA mine 3000874

Current hierarchy: **Mark R Stickles; Todd M Stickles → F. H. STICKLES & SON INC → F. H. STICKLES & SON INC.**

- 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:** F. H. Stickles & Son Inc → F. H. STICKLES & SON INC.; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bernard F  Stickles Et Al → F. H. STICKLES & SON INC.; 1950-01-01 to 2023-03-06; source msha-controller-operator-history
- **controller_controls_operator:** Bernard F  Stickles Et Al → F. H. Stickles & Son Inc; 1950-01-01 to 2023-03-06; source msha-controller-operator-history
- **controller_controls_mine:** Todd M Stickles  et al → F. H. STICKLES & SON INC.; 2023-03-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Todd M Stickles  et al → F. H. Stickles & Son Inc; 2023-03-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark R Stickles et al → F. H. Stickles & Son Inc; 2023-03-07 to current/open; source msha-controller-operator-history