# Relationship history for MSHA mine 2600097

Current hierarchy: **James M Rhodes Dynasty Trust I; James M Rhodes Dynasty Trust II → GYPSUM RESOURCES LLC → Blue Diamond Hill**

- 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:** Flintkote Company → Blue Diamond Hill; 1950-01-01 to 1980-04-06; source msha-controller-operator-history
- **controller_controls_mine:** Flintkote Company → Blue Diamond Hill; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Flintkote Company → Flintkote Company; 1950-01-01 to 1980-04-06; source msha-controller-operator-history
- **operator_operates_mine:** Genstar Gypsum Products Company → Blue Diamond Hill; 1980-04-07 to 1987-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Cimenteries Cbr Cementbedrijven → Blue Diamond Hill; 1980-04-07 to 1987-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Cimenteries Cbr Cementbedrijven → Genstar Gypsum Products Company; 1980-04-07 to 1987-08-31; source msha-controller-operator-history
- **operator_operates_mine:** James Hardie Gypsum → Blue Diamond Hill; 1987-09-01 to 2002-04-24; source msha-controller-operator-history
- **controller_controls_mine:** James Hardie Industries Ltd → Blue Diamond Hill; 1987-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James Hardie Industries Ltd → James Hardie Gypsum; 1987-09-01 to 2002-04-24; source msha-controller-operator-history
- **operator_operates_mine:** BPB GYPSUM, INC. → Blue Diamond Hill; 2002-04-25 to 2012-03-01; source msha-controller-operator-history
- **controller_controls_mine:** BPB Plc → Blue Diamond Hill; 2002-04-25 to 2006-12-31; source msha-controller-operator-history
- **controller_controls_operator:** BPB Plc → BPB GYPSUM, INC.; 2002-04-25 to 2006-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Saint-Gobain → Blue Diamond Hill; 2007-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Saint-Gobain → BPB GYPSUM, INC.; 2007-01-01 to 2012-03-01; source msha-controller-operator-history
- **operator_operates_mine:** GYPSUM RESOURCES LLC → Blue Diamond Hill; 2012-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James M Rhodes Dynasty Trust II  et al → Blue Diamond Hill; 2012-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James M Rhodes Dynasty Trust II  et al → GYPSUM RESOURCES LLC; 2012-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James M Rhodes Dynasty Trust I  et al → GYPSUM RESOURCES LLC; 2012-03-02 to current/open; source msha-controller-operator-history