https://www.reuters.com/article/us-tsmc-apple-chip/tsmc-reports-gas-contamination-at-key-chip-plant-which-supplies-apple-nikkei-idUSKBN2F00DN

Taiwan Semiconductor Manufacturing Co Ltd's most important plant supplying Apple Inc's processors has been hit by a contamination of gas, which is used in the making of chips, Nikkei reported on Friday, citing the company.