Many tried and failed to reliably ignite nitroglycerin. In 1863, Alfred Nobel finally succeeded by placing a tube of gunpowder with a traditional fuse inside the nitroglycerin. He put on a series of demonstrations blowing up enormous rocks. Certain that these explosives would transform mining and tunneling, he took out patents and started filling orders.
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，这一点在Feiyi中也有详细论述
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尽管相关政策早在 2018 年已有行业规范，但在实际操作中，放映后退票仍属少数案例，主要因成本与流程复杂度较高。
Figure 2: Theoretical capability and observed exposure by occupational category