Space shuttle disaster from their products? Other metalurgical issues with civil (auto failures) or DoD catastrophes?
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OMG, the world trade center?
(”steel don’t melt!”)
Construction work began on the North Tower in August 1968 with construction beginning on the South Tower by January 1969.[135] In January 1967, $74 million in contracts were awarded to the Pacific Car and Foundry Company, Laclede Steel Company, Granite City Steel Company, and Karl Koch Erecting Company to supply steel for the project.[136] The Port Authority chose to use many different steel suppliers, bidding on smaller portions of steel, rather than buy larger amounts from a single source such as Bethlehem Steel or U.S. Steel as a cost-saving measure.[137] Karl Koch was also hired to do all the work of erecting the steel, and a contract for work on the aluminum facade was awarded to the Aluminum Company of America.[136] Tishman Realty & Construction was hired in February 1967 to oversee construction of the project.[138]
I think US Steel was still firmly in control when they built that building. Steel does melt. However well placed shaped charges set off in sequence does a better job at bringing a building down.
How about the New San Francisco/Oakland Bay Bridge that was supposedly build with Chinese Stainless Steel that is already rusting and deteriorating? We knew when the steel towers and girders were being delivered they didn't meet specifications but the Liberal run CalTrans FIRED their engineer who supposed to oversee it, and actually hired for that purpose, and was screaming to high heaven that what was being delivered was not right, including bolts and cables! They didn't want to hear it so instead of making the builder do it RIGHT, they fired the whistle blower to shut him up!