WINONA, Miss. (WCBI) – 20 new jobs are on the way for Winona. Business is picking up for Screw Conveyor. That corporation has been a fixture in Montgomery County for 60 years. With additional contracts comes the need for expansion. The Delta Regional Authority is investing more than $100,000 to grow and renovate the current facility. Screw Conveyors are typically placed inside tube like structures to move liquids or grains. Screw Conveyor currently employs 48 people.