I am unaware of any record for Pittsburgh industry - however that is even defined - last year? https://twitter.com/realDonaldTrump/status/1300258463298224129
In fact: https://triblive.com/business/why-trumps-steel-tariff-didnt-save-u-s-steel-workers-from-layoffs/
Which is not to suggest the president has not had an impact on local industry: https://reason.com/2019/07/12/at-least-80-workers-are-losing-their-jobs-at-this-pennsylvania-steel-plant-tariffs-are-to-blame/
He can certainly take credit for at least one steel plant shutting down entirely: https://www.post-gazette.com/business/pittsburgh-company-news/2020/03/31/ATI-s-Midland-plant-steel-tariffs-allegheny-technologies/stories/202003310142
And today, you probably need to go back before the Civil War to find a period when regional coal+manufacturing employment is lower in Pittsburgh than it is today.
Maybe that is what he meant by record-setting?
Maybe that is what he meant by record-setting?
Yes, even during the Great Depression I’m sure there were more people at work in factories here than today https://twitter.com/chrisbriem/status/1300148649159258112
But don't take any of that from me. The big picture on what havoc has been wrought on the steel and manufacturing industries because of recent policies: https://econofact.org/steel-tariffs-and-u-s-jobs-revisited