What do these .mdmp files mean?

Does anybody know what type of crashes these are? They’re both the same crashes, on separate servers.

http://dumps.metastruct.uk.to/dumper.py?dump=exec_cggmod3ph2_1678491_crash_2014_9_14T20_48_6C0.mdmp

http://dumps.metastruct.uk.to/dumper.py?dump=exec_cggmod2ph1_1678491_crash_2014_9_14T19_45_59C0.mdmp

Information such as what type of crash this is, what may cause it, etc…