Abstract: This paper introduces a novel and simple etching technique that utilizes a mixture of sulfuric acid (H2 SO4) and hydrofluoric acid (HF). This method selectively etches silicon dioxide (SiO2) ...
The Chosun Ilbo on MSN
POSCO Pohang Steelworks Gas Leak Leaves 3 Unconscious, 3 Injured
On the afternoon of the 20th, an unexplained gas leak occurred at POSCO’s Pohang Steelworks in Nam-gu, Pohang, North Gyeongsang Province, leaving three people—employees of POSCO and its subcontractors ...
A plant worker died following an exposure to hydrofluoric acid at a chemical plant in St. Gabriel, sources confirmed to the WBRZ Investigative Unit. Sources said two workers with burns were taken from ...
Two workers were sent to the hospital and one of them later died after they were exposed early Tuesday morning to hydrofluoric acid at the Mexichem Fluor Inc. refrigerant plant in St. Gabriel, company ...
Indore: Five students and two teachers of a private school suffered minor burns after a conical flask containing diluted hydrochloric acid broke during a demonstration of an experiment in chemistry ...
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