Composite manhole cover with embedded detection

A composite manhole assembly comprising:

• a manhole cover comprising:
• a disc-shaped body made of a fiber-reinforced thermosetting composite, the disc-shaped body having a cavity therein defined by boundaries of an embedded mass of magnetic material;
• the disc-shaped body having an edge;
• the mass of magnetic material being detectable by a metal detector;
• the mass of magnetic material is locatable by the metal detector when the mass of magnetic material is obscured by a pavement;
• the manhole cover is adapted to support vehicle traffic by comprising fiber reinforced thermoset polymers to pass a 20 tons proof-load test, wherein the disc-shaped body comprises at least one electronic component that is placed within the fiber reinforced thermoset polymers prior to curing of the fiber reinforced thermoset polymers;
• a manhole frame being substantially ring-shaped and having an external circumference and an interior circumference, the interior circumference having a supporting edge adapted to physically couple with the edge of the disc-shaped body such that the disc-shaped body is securely nest therein;
• and
• the manhole frame comprises a fiber reinforced thermoset polymer.