Tag Archives: #bluegrey

Inky Thots: Birmingham Coking Coal

Birmingham Pen Company Coking Coal ink is named in honor of coking coal, a unique coal which “usually refers to the product derived from low-ash and low-sulphur bituminous coal by a process called coking.”  Coking is “the heating of coal … Continue reading

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Inky Thots: Birmingham Slag Grey

Blue-green-grey Birmingham Slag Grey ink is named in honor of the Homestead Steelworks, built in 1881. It became part of the Carnegie Steel company in 1883. For many years was the largest steelworks in the world. Remember that others review … Continue reading

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