BlockCad & BlockVal
BlockCad/BlockVal is an application for presentation and evaluation of blockmodel data. Colours for different grade intervals, or combination of grades, are specified by the user. The grades are presented in three dimensions as graphic elements. These graphic elements are linked to the database from where information of certain objects can be requested interactively. It is also possible to search for objects matching certain search criterias.

Calculations of mean grades and tonnage are carried out on user defined ore positions. Ore values can be treated as a combination of several estimated grades, on those, certain minimum/maximum limits of grades can be applied in presentations and evaluations. Ore grades, tonnage and revenues are stored and can be presented in reports.

To perform blockmodel presentation and evaluation you will need a blockmodel table, this table has to consist of certain fields such as north, east and depth positioning, block thickness and so on. Except these fields the user can introduce fields for storing grades and other values.
It is possible to add several ore value definition formulas which allows the user to present a compound value calculated from several separate grades in the blockmodel.
Each of the grade fields and the ore value definition formulas has an unique interval table with an unlimited number of grade intervals. These tables are configured by the user.
The actual presentation of the blockmodel can be done in three different directions, on blockmodel levels, in profiles SouthNorth and EastWest.
Two methods are available, each block as an single shape with calculated value or grade as text inside the shape, or as colour shaded blocks.
The BlockVal application evaluates mean grades, orevalues and tonnages in mining positions for a selected OreValue definition. The mining positions are defined by Shapes drawn at the active depth for wanted blockmodel level. From the elevation of this shape the application identifies the blockmodel level for the mining position. The whole thickness of this level is suggested for evaluation in the Mining Levels menu. The user can define a lower thickness for this level or define evaluation of adjacent levels, to be able to follow current mining operations.
The result of the evaluation is presented in the BlockVal menu. Mean grades for the mining position are presented under Grades. The combined OreValue and tonnage are presented under Result of Evaluation, Position. The Result of Evaluation, Total is a summary of several performed evaluations during the same session. The results can be added to a result file from which reports can be produced at any time.

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