# Relationship history for MSHA mine 4104297

Current hierarchy: **Kevin A  Rowell; Sue T  Rowell → Superior Topsoil & Materials → Superior Topsoil & Materials**

- 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:** Superior Topsoil & Material → Superior Topsoil & Materials; 2001-07-01 to 2004-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Harold  Price → Superior Topsoil & Materials; 2001-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harold  Price → Superior Topsoil & Material; 2001-07-01 to 2004-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Superior Topsoil & Materials → Superior Topsoil & Materials; 2005-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kevin A  Rowell et al → Superior Topsoil & Materials; 2005-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin A  Rowell et al → Superior Topsoil & Materials; 2005-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sue T  Rowell et al → Superior Topsoil & Materials; 2005-01-01 to current/open; source msha-controller-operator-history