Pinart Freres

Pinart frères (Pinart Brothers) of Marquise (Pas-de-Calais), France
1837 Pinart frères established two blast furnaces at Bouquinghen, Marquise. They used ore from Blacourt and Pessevert, used to produce iron castings for various industries.
1846 Proposal to add two new coke blast furnaces and a 60 HP blowing engine for the blast furnaces.
Note: There was a competing ironworks nearby, founded in 1838, under the management of M. Broutta and belonging to Messrs. Sherwood and Cie., also having two blast furnaces, of the same capacity as those of Pinart. They produced pig iron for the Guines forges, operated by the same company.
The above information is condensed from the e-monumen.net website[1]