Runaway Mine Train front seat on-ride 4K POV @60fps Six Flags Over Texas

There are currently 15 of these Arrow Dynamics mine train coasters in operation, but this one was the first when it opened in 1966. It was followed by five more over the next six years, all of them opening at Six Flags parks. The one at Six Flags St. Louis (River King Mine Train) was relocated to Dollywood (Thunder Express) and then moved to Magic Springs as Big Bad John, but can you name the only one no longer in operation (even after moving to another park)?
Six Flags Over Texas is located near Dallas in Arlington, Texas.

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