I am sure that somebody will take up the task of reproducing these alloys using intense heat from a non-atomic source. New alloys can be quite lucrative but developing them requires just as much experimentation as making new drugs. I'd imagine that getting to an alloy of 7 metals through progressive experimentation would take awhile. Now we know it's possible and have a possible production path. That is enough to spur some experiments down that road.
Nuclear cement kiln
Nuclear pile jetter
Nuclear tunnel boring machine.
https://en.wikipedia.org/wiki/Doramad_Radioactive_Toothpaste