Hello - the mtl file does not point to any of the bitmaps - it needs a line like this, as far as I can see - for each material:
# 3ds Max Wavefront OBJ Exporter v0.97b - (c)2007 guruware
# File Created: 17.06.2014 17:17:59
newmtl wire_141007058
Ns 32
d 1
Tr 0
Tf 1 1 1
illum 2
Ka 0.5529 0.0275 0.2275
Kd 0.5529 0.0275 0.2275
Ks 0.3500 0.3500 0.3500
map_Kd FY.jpg <<<<<<<<THIS
-Pascal