Oct 2 (Reuters) - Wall Street's main indexes opened

lower on Wednesday as investors priced in a possible escalation

in geopolitical tensions in the Middle East, while a survey

allayed concerns about a rapid cooldown in the labor market.

The Dow Jones Industrial Average fell 31.8 points, or

0.08%, at the open to 42,125.14. The S&P 500 fell 10.6

points, or 0.19%, at the open to 5,698.14​, while the Nasdaq

Composite dropped 43.2 points, or 0.24%, to 17,867.124

at the opening bell.