What is "shingle weaver"

A shingle weaver (US) or shingler (UK) is an employee of a wood products mill who engages in the creation of wooden roofing shingles or the closely related product known as " shakes." In the Pacific Northwest region of the United States, historically the leading producer of this product, such shingles are generally made of Western Red Cedar, an aromatic and disease-resistant wood indigenous to the area. The use of the term "weaver" for a shingle maker related to the way in which the workers fitted the shingles together in bundles but the meaning has extended to anyone who works in a shingle mill.