The Dutch Navy Department ordered on7/18 December 1908 two barrage mines witch anchors although without the special devices as firing devices and packaging and further more 4 mine bodies with loading buses as specified on the drawing. Contracted costs for the two mines each ƒ 1.550=totally ƒ 3.100 and for the four bodies each ƒ 750=totally ƒ 6.100. Real building costs ƒ 4.280,73 (wages ƒ 1.645,32, percentage cost ƒ 1.069,46, several expenses ƒ 419,28 and materials ƒ 1.146,67) resulting in a profit for the yard of ƒ 1.819,27.
Source
Archief Kon.Mij. De Schelde 1875-1970 (Municipality Archive Vlissingen, Netherlands) block 214 inventory number 1217.
