Hatchet: Black Howe Co., Galveston Causeway

I cannot find any information on this “Black Howe Co., Galveston, Causeway”. I can only assume it was fabricated during the construction of the original causeway in 1912, but I cannot find any supporting documentation. I even contacted the Galveston county Museum, and they could not find any information. Has anyone else ever seen this before? Any New information would be greatly appreciated!