Possible Clues:

• Spot university workers on pitch
• On the road it sank its teeth into you people
• Road's topping, but mine is extraordinary
• Material for road surfacing, roofing, etc
• Tar in tumble at sea avoiding line
• Asphalt component
• Pitch university against piece workers
• Scrap list of courses, advancing superior material that surfaces
• Corporation taken in by good French pitch
• Tarry substance used to surface roads and roofs