South Carolina is a proving ground for Republican candidates in presidential elections.
Arrangements will be made for your admittance to the proving ground.
The problem was solved by using the barren surface of the moon and the asteroid belt beyond Mars as a proving ground.
Here are the expanding works of a formidable fort defending the harbor entrance, and an artillery trial and proving ground.
The site remained off-limits to military and civilian personnel of the proving ground and closed to the public.
The pilot howitzer was delivered by the Watervliet Arsenal to the proving ground on August 24, 1918.
"Post hospital, Aberdeen proving ground," he said sleepily, rubbing his eyes.
There, on the proving ground, they watched a big transport-plane land on a makeshift airstrip.
But when these mortars were sent to the proving ground the test-firing deformed the barrels and broke the metal bases.
Extensive laboratories were built at Lakehurst, and the proving ground was operated by a force of 1,500 men.