In order to Import an existing block model as an event, place an Import icon in the History window. You will then be provided with an file open window, to select the block file (which must have a suffix of .g00). Once the file has been read in, a second window opens that allows you to alter the offset, the scale and other import parameters.

A block model is a model of a three dimensional structure described as a regular voxel model, that is, it is broken up into a equal sized cubes. The format of the block model must be a standard indexed Noddy block model file set, with suffix .g00, however various formats may be converted into the Noddy block format, such as raw voxel models, old Noddy block model formats, and Vulcan regularised block models, via the Tools menu.

The geology in the rectangular volume defined by the block model is replaced by the content of the block model, with one exception, if the index for a particular voxel is zero or the transparency value defined in the import window. In this case the pre-existing geology remains. Using the Transparent Layers option, multiple unconnected objects may be imported at one time, and objects may be hollow, or in fact have any complex structure desired.