Job Posting: Manual Excavation Laborer - Geotechnical | Environmental Division. Company. Seylone. Location. Mid-Atlantic (NY, NJ, PA, CT, DE). Employment Type. Full-Time. Compensation. $25 to $35 per hour, based on experience and skills. About Seylone. Seylone is a leading construction and consulting firm, specializing in advanced geotechnical and environmental services such as test pits and borings. Our commitment to excellence, innovation, and ...