Specimen / coalfield / sample / coal, bituminous

Bone weaving comb from the Roman site at Newstead (Trimontium)

Bone weaving comb from the Roman site at Newstead (Trimontium)

Bone weaving comb ornamented with horizontal and diagonal lines, from Nybster Broch, Caithness, 200 BC - 400 AD

Long-handled weaving comb of cetacean bone, from Kettleburn, Caithness

Handle of a bone weaving comb, from Dun an Fheurain, Argyll

Long-handled weaving comb, from Galson, Lewis

Weaving comb of oak with tapered handle and seven short teeth: North America, USA, Navajo, 1992