Sharp blades

I was struck by the statement that there's only one American producer of tool steels left: Crucible of Syracuse. The article is "Sharper," on page 70 of the November 24 New Yorker. I like it that the Crucible page speaks of "systems for leading edge manufacturers." "Leading-edge manufacturers" is not the intended meaning, it appears; rather, it's leading manufacturers of edges (as in blades). Here's the Crucible page on tool steels for knife-making.