proving ground

A few terms in the House of Representatives used to be the perfect proving ground for politicians en route to higher office.

But Pennsylvania could be the ultimate proving ground this time around of what I call the “we gave the black guy a chance” theory.

South Carolina is a proving ground for Republican candidates in presidential elections.

In 2010, Colorado will be an important proving ground for the Tea Party.

Here are the expanding works of a formidable fort defending the harbor entrance, and an artillery trial and proving ground.

"Post hospital, Aberdeen Proving Ground," he said sleepily, rubbing his eyes.

The pilot howitzer was delivered by the Watervliet Arsenal to the proving ground on August 24, 1918.

But when these mortars were sent to the proving ground the test-firing deformed the barrels and broke the metal bases.

The Government in the fall of 1917 bought a large tract of land near Aberdeen, Md., to be an artillery proving ground.