The mark consists of a crest design with a circular design in the center consisting of a gasmask and helmet design on the left and a design on the right, which has the shape of a combination of the shape of the alphabetic character "I" and the shape of the alphabetic character "A" whereby both parts, the character-"I"-part of the shape and the character-"A"-part of the shape, are of the same size and the character-"I"-part of the shape is located on the left upper corner of the design and the character-"A"-part of the shape is located on the right lower corner of the design and both parts, the character-"I"-part of the shape and the character-"A"-part, are connected on the right lower end of the character-"I"-part and the left upper end of the character-"A"-part, this circular design in the center inside a double circle border, and on a shaded background. Above the circular design is a shaded rectangle, with a rectangle border arround the term "OXXOLON" in stylized font, above vertical bands above the circular design. Below the circular design is shaded inverted pentagon with four part design made up of two sets of four diagonal lines and two trapezoid designs.