PORKBUSTERS UPDATE: Here’s an update on the Murtha Mystery Earmark:

The Department of Energy is denying Rep. John Murtha’s (D-Pa.) claim that it supports his $1 million earmark request for a project in his district aimed at protecting the nation’s natural-gas pipelines.

Murtha attempted yesterday to quell criticism of a so-called mystery $1 million earmark to establish the Center for Instrumented Critical Infrastructure, a subsidiary of Concurrent Technology Corporation (CTC), a nonprofit technology innovation center in Johnstown, Pa., that has received millions of dollars in earmarks in recent years.

DoE spokeswoman Anne Kolton said yesterday the earmark is not a program that meets the department’s “mission critical” threshold, noting it was “inconsistent” with the department’s 2008 budget.

Anti-earmark crusader Rep. Jeff Flake (R-Ariz.) challenged the earmark on the House floor Tuesday, asking if the “mysterious” Center for Instrumented Critical Infrastructure even existed because he and his staff couldn’t find a website for it. Flake’s challenge failed, 98-326.

In response to Flake, Rep. Pete Visclosky (D-Ind.), who chairs the spending subcommittee responsible for the project, admitted he didn’t know whether it existed.

Your tax dollars at work . . . though for whom, exactly, remains unclear.