scouting
exploratory survey
reconnoitering
reconnoitring

"An exploratory survey of the enemy's territory?"

In the fall an exploratory archeological survey of the area where the utility trenches were planned was done by Nicholas Bellantoni, the state archeologist.

The Futuremen and I will begin an exploratory survey for the metallic ores and other materials we'll require.

The Atomic Energy Commission was initially convinced that the West could not supply the nation's uranium needs but exploratory surveys in the early 1950s changed their minds.

Prabodh Chandra was enriched with their exploratory survey of the archaeological remains of Angkor Vat.

The first known specimens of the northern sawtail catshark were collected during exploratory surveys conducted off northeastern Australia in the 1980s, and provisionally termed Galeus sp.

In addition to undertaking several exploratory surveys, he laid out trails, supervised road construction, and inspected road-works.

More exceptionally, magnetometers are used for low-resolution exploratory surveys.

It should, however, be remembered that extraction of this raw material requires ongoing exploratory surveys.

He chose one of his protégés, Lt. Jose del Rio Cossa, to conduct an exploratory survey of Florida's naval store resources.