Mudrian says that, freed from the pressure of the mainstream, metal went underground.

NPR: Kicking and Screaming, Metal Back in Music Spotlight

Most of the contributions under scrutiny were traced to Huang, who went underground in the last weeks of the campaign and has only briefly resurfaced.

CNN: Campaign Finance: The Show Begins

But instead of disappearing, the trade went underground and radically changed.

FORBES: Inside Dope

On Apr. 1 Hurd arrived at HP and went underground: no ad cameos or voice-overs, no portrait in the lobby, no lengthy press profiles (until this one).

FORBES: The UnCarly

However, if it were to reintroduce the drachma, the new currency would quickly become worthless, while the private Greek economy went underground and continued to do business in euros.

FORBES: Earth to Greece: It's Over

Coming up, remembering a time when people in London went to The Underground for safety.

NPR: A Look at Al Qaeda's Strength, Structure

She won a place in Girls Aloud through reality TV show Popstars: The Rivals in 2002, and their first single Sound of the Underground went straight to number one.

BBC: NEWS | UK | Tweedy and Cole in wedding ruse

Miners often went as deep as one mile underground to dig iron ore.

CNN: Grieving father offers teens money not to drink

The role of the British government, and its underground contact (who went by the homely name of Fred), is traced.

ECONOMIST: Irish history: Love one another | The

The Iraqis went to extraordinary lengths to conceal preparations for and evidence of this underground test.

CENTERFORSECURITYPOLICY: Truth and Consequences for Saddam

United Utilities said the electricity went off in about 1, 300 households in the Eccles area at 1430 BST due to an underground cable fault.

BBC: Eccles homes hit by power cut during England match