Mossy Oak® Bottomland® Workzone Slate Call The Mossy Oak® Bottomland® Workzone Slate Call is assembled using a combination of superior adhesives to deliver outstanding sound quality at an economical price. Designed as one of the best-sounding plastic pot slate calls in the industry, this call offers consistent tone and reliable performance season after season. Extremely user-friendly, the Workzone Slate Call is ideal for both new and experienced turkey hunters, making it easy to produce realistic turkey vocalizations that bring a longbeard down a Dead End road .