COURSE OBJECTIVE: Both geological and mining programsGEMS modelling mine closer planning  equip the students with knowledge in general fuctionable mine software (Both geological and mining programs) Gemcom GEMS suppose to do over all mining activity (start from geological ore body modelling to mine closer planning) under helping of computer operated mine programs.  At the end of the course, the student will be able to plan and design a surface mine given the geologic data and topo files.

Chapter One

Con… Types of mine programs Computer programs that are used in mining, according to the purpose, can be divided into the following groups: General-purpose Software Packages GEMS 1. General-purpose Software Packages: mining computer programs for modeling and design of mining deposits by the means of surface and in underground mining, (GEMS) specialized software packages surpac 2. specialized software packages for optimization of surface and/or underground mining exploitation and analysis of the metallic and non- metallic minerals Exploitation and (surpac). Specific Application Software Packages, 3. Specific Application Software Packages, designed for the analysis of specific problems related to the design of mines or the design of exploitation technology, Whittle (mining cost analysis, analysis of some technical problems in surface)/ Whittle,

Gemcom / GEMS (general purpose) Software package Gemcom is designed for geological interpretation and modeling of unstratified deposits and the design of surface and underground mining of metals and nonmetals.

GEMS  It program is used for exploration, modeling, design of surface and underground mining operations, long-term planning and monitoring of production.  The central database of the computer program GEMS includes data from the following categories:  Drilling and blasting,  Controlled estimated value,  Geotechnical,  Exploration,  Quality control of ore,  Deposit geology,  Exploitation plan and  Survey.

Lerchs-Grossmanov algorithm based Micro mine software edited Gemcom design

From polyline (survey) data Gemcom develop lease area,

Field Data Preparation And Importing Software Formatted Database Part-One; Field Data Preparation And Importing Software Formatted Database  Import drillhole data from a file to add records to a workspace. It possible import ASCII data from text files that are saved by GEMS programs, and that are in a fixed-width format or a delimited formal.  To import ASCII data into more than one table in the work space, be sure to; header -First Import into the header table import secondary -then import into the secondary table. How to map data to import into multiple tables? A. To import the data into multiple table in one step, map the values from the data file into fields in different table of the drill hole workspace. header table duplicate-id for use by the secondary Eg. Map header table => Map duplicate-id for use by the secondary table (Assay, litho …) Importing Sequence Header_ Survey_ assay _ Lithology _etc. secondary data Importing Sequence ; Header_ Survey_ assay _ Lithology _etc. secondary data;

Primary database 1. Header table. The header must be able to save the information about; location X,Y,Z A. location – a 3D co-ordinate data type, for the co-ordinates (X,Y,Z) of the drillhole collar. lengthtotal length B. length – a real or double data type, for the total length of the drillhole. some types some types, have interval or distance type survey data, may also want to include this field in the header (tracing type and compositing)

2. Survey Table Survey table must be able to save information about the direction and orientation of the drill holes which defined by specific fields that vary depends on the intended use (this is depending on the workspace subtype). survey workspace data table the required fields for survey workspace data table, Hole-Id A. Hole-Id ; contains the unique identifier for the drillhole from drill holes From b. From ; w/c is real/double data type records the distance along the drill hole from the collar to the start of intervals. To c. To ; similar fields data type with from, and it records dirtance along collar to the end of the interval. Azimuth d. Azimuth ; real/double data type which contain the direction of the interval Dip E. Dip ; rea/double data type w/c contain dip or inclination of the interval. Distance f. Distance ; rea/double data type,defines distance from collr to appoint along a direction.

Secondary Database 3. Assay Value table 3. Assay Value table Assay table must be able to save information about the exploration results (geochemical analytical results) of the sample. Hole-Id Hole-Id ; contains the unique identifier for the drillhole from drill holes From a. From ; w/c is real/double data type records the distance along the drill hole from sampling start of the intervals. To c. To ; similar fields data type with from, and it records length along collar to the end of sampling interval. Value d. Value ; double type data which represents the lab recorded assay/ measured value of each sampling intervals.

4. Lithology/geolog y Lithology table must be able to save information about the stratigraphic composition of the areal geology from core leading of the sample. Hole-Id Hole-Id ; contains the unique identifier for the drillhole from drill holes From a. From ; w/c is real/double data type records the distance along the drill hole from litho/geology start of the intervals. To b. To ; similar fields data type with from, and it records length along collar to the end of litho interval. Rock code c. Rock code ; string type data which represents the geology of steadied area.

Part-Two; Starting New Project Project has a set of databases and such global settings as the units of measure. Single mine usually has one project,  Many users share the data in the project. This eliminates the need to transfer and ensures everyone has access to the most current data. One project can use only one type of database. Use the steps in the wizard to select a database  While set up a project, GEMS creates site, project, and data group databases and other files.  GEMS software license affects which types of database you can select and use. Contact Gemcom Support for details.

Lab-excersice VS Basic Concept Au(gold) Project

Starting New Project Project has a set of databases and such global settings as the units of measure. Single mine usually has one project,  Many users share the data in the project. This eliminates the need to transfer and ensures everyone has access to the most current data. One project can use only one type of database. In GEMS, on the File menu, point to New, and then click Project. Use the steps in the wizard to select a database  While set up a project, GEMS creates site, project, and data group databases and other files.  GEMS software license affects which types of database you can select and use. Contact Gemcom Support for details.

Con… Use the steps in the wizard to select a database In GEMS, on the File menu, point to New, and then click Project; Chemical represent of the mining target element /metals

Con … Select the above workspace structural copy space.

Workspaces for drillholes  GEMS saves drillhole data in workspaces, tables and fields For drillhole data, you must have the tables and fields that GEMS uses to define orientation of a drillhole. header secondary This information is in a header table and a secondary table several subtypes Drillhole workspaces have several subtypes. Each of these subtypes has certain required tables and fields. adding an additional tables data and fields It is possible adding an additional tables data and fields, as needed, but it is impossible to use them for any of the typical GEMS.

The minimum structures needed for drillhole workspaces are: Note; Header table. location (or collar The header must be able to save information about location (or collar) of the drillhole, For all workspace subtypes, the Header table must have these fields For all workspace subtypes, the Header table must have these fields: LOCATION – a 3D co-ordinate data type, for the co-ordinates (X,Y,Z) of the drillhole collar. LENGTH – a real or double data type, for the total length of the drillhole.

Process…. Add data to importing wizard, New profile Write table type Brwoth the imputable data table

Importing The Prepared Field Database For simple Dh data For Survey map-data points Data From other PRM For Map contour data Browse… data from location Folder & NXT And import through keeping the data sequence

Displaying Imported data Open display set/profile And put the data type Insert the display Data

Con… Select W-Space type For Symbol Cods Detail D-profile NEW-profile

Creating Vertical And Plane Section For Vertical Section For plane-Sxn

Con … Vertical Section Place at needed place Plane Section Place at needed place/Plane

Con … Name section

Limiting the Right/Away And Left/toward boundary of single section. R-click then Select property Put the limitation numeric value for both side

Pre-solid creation preparation Creating Polyline w-space for Ring and Tie lines; Open the drill holes and Set Active the needed section from profile Set as 2D (X& y) To Start securing the valuable Go to Polyline=> Feature Line =>select 3D rigs &starting digitizing The start digitizing & save to Prepared workspace And Select 3D rings & Ok

Open all the Rings

Creating Ore Sold from Tied Rings Creating Ore Sold from Tied Rings

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