What has been the impact of steel tariffs on jobs in these industries thus far? Estimates from a study released in December by Aaron Flaaen and Justin Pierce at the Federal Reserve Board of Governors show that by mid-2019, increased input costs due to the steel and aluminum tariffs are associated with 0.6 percent fewer jobs in the manufacturing sector than would have been the case without the tariffs. We compute that this amounts to about 75,000 fewer jobs in manufacturing attributable to the March 2018 tariffs on steel and aluminum, not counting additional losses among U.S. exporters facing tariffs other countries levied in retaliation.
Really not a great source. It's a double indirect calculation of "job losses" compared to a hard "job increase" statistic from actually counting the number of jobs.
Plus they don't actually show their methodology for calculating how a 0.6% estimate (with no error bars) equates to 75k jobs less.
Unless you want to read and understand and figure out how to explain the Federal Reserve report they link to in that section, you probably shouldn't use that as a a source, because the obvious next question is "okay show me the 75k jobs that were lost, gimme a list", which doesn't exist at all.