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NASA engineer speaks to Boardman students.

Understanding blast shelter design isn't optional if you live near military bases, ports, airports, or other primary targets.

... it's about having the professional integrity to know when to pause and bring in a specialist, like a structural engineer, to ensure a ...

ចំពោះបងប្អូន ដែលចង់ជាវ វីដេអូមេរៀនគូរប្លង់ទៅរៀនដោយខ្លួនឯង ...