The period featured a shift toward explicitly modeling ignition-and-growth dynamics in heterogeneous explosives, using one-dimensional hydrodynamic representations to capture localized hot-spot initiation and boundary-driven growth. This paradigm improved initiation-sensitivity predictions and provided a foundation for subsequent computational blast models and safety analyses. Parallel efforts connected blast loading to practical outcomes, linking ground vibration to structural response, standardizing underwater explosion measurement and data evaluation, refining rate-dependent fracture criteria, and clarifying the differences between homogeneous and heterogeneous reaction zones. Historical Significance: The ignition-and-growth framework became the bedrock of later blast modeling tools, enabling more credible predictions and safer design practices across mining, construction, and detonation engineering. Cross-context measurement standards and the emphasis on boundary-driven growth anchored future regulations and benchmarks, while insights into steady-state reaction-zone structure across formulations informed material design and detonation performance assessment.