Block model thickness

To run this function: Choose Block model > Column processing > Thickness, or...

In the Function Chooser, type BM THICKNESS, and press ENTER.

For example, in a case where a column in a bench comprises multiple occurrences of alternating ORE and WASTE bands BM THICKNESS can report the aggregate thickness of all ORE blocks in the column along with the average grade. This enables you to generate ore thickness and grade contours for that bench.

Fields on the Block model thickness form

Field	Description
Enter attribute properties
Class attribute	The name of the attribute that stores the value used to discriminate blocks.
Class Value	The value signifying the class for which thicknesses will be determined. This value must conform in type to the class attribute.
Attributes to composite	The numeric attributes to composite.
Attributes to aggregate	The numeric attributes to aggregate.
Output string file:
Location, Id	The Location and Id of the string file where the thicknesses and grades will be written.
Direction of columns	The direction that defines the orientation of columns in the model. This may be X, Y, Z -X, -Y or -Z. The directions which can be used include: -X The columns are horizontal and aligned with the X axis of the block model and are processed in order of maximum X to minimum X value. X The columns are horizontal and aligned with the X axis of the block model and are processed in order of minimum X to maximum X value. -Y The columns are horizontal and aligned with the block model Y axis and are processed in order of maximum Y to minimum Y value. Y The columns are horizontal and aligned with the block model Y axis and are processed in order of minimum Y to maximum Y value. -Z The columns are vertical and are processed in order of maximum Z to minimum Z value. Z The columns are vertical and are processed in order of minimum Z to maximum Z value.
Constrain extraction?	Selected: To constrain the blocks for which to extract class thicknesses. Cleared: All blocks in the model will be included in the thickness calculation.
Report file name	The name of a text file that is created to hold information from this funtion.
Format	The format of the output file.

Output

Two strings are created in a string file. String 1 will comprise the coordinates of the top of each column with the total thickness of blocks that have the specified class value in D1. Composited grades are stored in subsequent D fields, followed by aggregate values. The note file lists the composited and aggregated attributes and the D fields to which they report. String 2 has the same information as for String 1 except that it comprises the thicknesses and grades of blocks that do not have the specified class value.

Note: Later processing could involve splitting the strings into separate files for creation of DTMs and contouring of thicknesses and composite grades of ORE and WASTE within a specified bench constraint.

Messages

Message	Description
`Ore and/or waste value given for ore attribute class is of the wrong type`	This error appears if the Class value chosen does not match the Class attribute.
`Results are in the file ?.not Results written to ?.str`	On successful completion of the command these messages are displayed in the message window.