I have no info on who S&N is using. But I know that Beall Mfg in East Alton IL has run a tool forging plant for over 100 years. They specialized in mining tools. Some years back they started a subsidiary, Cutting Specialists Inc., to market their industrial mower blades. That business surpassed their mining tools and continues. But recently (since last year) Beall has sold off their forging works Star Mfg. of Freeport IL. Star is likely still capable of forging axes and mining tools.
"Beall Mfg. in East Alton, IL has agreed to sell most of its assets to Star Mfg. of Freeport, IL. Tooling, prints and customer contact info are being moved immediately. Contact Star at 815-235-7750 for more information.
This DOES NOT have any effect on Cutting Specialists, Inc. It will continue to operate under the same ownership and in the same location"
http://www.supertufmowerblades.com/...her-than-the-tillage-shanks-and-mower-blades/
Beall and Warwood are 2 American makers that survived by filling an industrial niche.