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The document provides a mining scenario involving sinking a shaft to 500 m to transport miners and equipment underground and lift 10-ton platinum ore to the surface. Activities include investigative questions about headgear components and functions, comparing mine winches, and calculating travel per drum rotation, plus design skills requiring a design brief, specifications, constraints, and two freehand 3-D isometric design sketches with labeled dimensions.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/grade-8-mechanical-systems-and-control-mini-pat-assessment-guideline/665170/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/grade-8-mechanical-systems-and-control-mini-pat-assessment-guideline/665170.png","ImageObject",300,407,{"name":92,"@type":93},"hdkawk","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-29",true,{"@type":102,"interactionType":103,"userInteractionCount":19},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the purpose of mine shaft headgear in the scenario?","Question",{"text":112,"@type":113},"It must transport miners and equipment 500 m underground and lift platinum ore weighing 10 tons back up to the surface.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How do you calculate how far the cage drops per single rotation of the drum?",{"text":117,"@type":113},"Use the formula C = 2πr with the given drum diameter (to determine the circumference for one rotation).",{"name":119,"@type":110,"acceptedAnswer":120},"What is required in Activity 2 for the design portion?",{"text":121,"@type":113},"Write a design brief including specifications and constraints, then sketch two 3-D isometric freehand designs that include dimensions and labels.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},665170,1793292038,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":19,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":52,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":129,"read_time":143},3985747859855,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","[School Logo]  \nGRADE 8  \nMECHANICAL SYSTEMS AND CONTROL  \n(MINE SHAFT HEAD GEAR)  \nMINI-PAT  \nSURNAME & NAME:  \nGRADE 8:    \nTeacher/s:  \nModerator:  \nASSESSMENT GUIDELINE  \n\n| ACTIVITY | DESCRIPTION | POSSIBLE\u003Cbr>MARKS | MARK\u003Cbr>OBTAINED |\n| --- | --- | --- | --- |\n| Investigative process | Investigation: Mine shaft headgear and headframes | 15 |  |\n| Design process | Write a design brief, specifications, and constraints of a mining shaft headgear | 20 |  |\n| Making | Sketch your two freehand designs (include dimensions and labels | 35 |  |\n| TOTAL |  | 70 |  |\n\nPage 1 of 8 P.T.O  \nACTIVITY 1  \nPROBLEM STATEMENT / SCENARIO/ CONTEXT  \nINVESTIGATION:  \nPlatinum , a very valuable metal, has been found on land belonging to a tribe in a rural area. Samples show that the platinum is only 500m below the surface. An international and South African company joint venture company , called Platinum Stars, has decided to invest money in this project. They want to sink a shaft to the 500m point to take a few samples. They will decide on the best mining method. Your engineering company wants to submit a tender for the construction of the shaft headgear. The headgear must be able to transport miners and equipment 500m underground. It must also be able to lift platinum ore that weighs 10ton back up to the surface.  \nPage 2 of 8 P.T.O  \n1. Mine shaft headgear, head frame and winch  \nUse the above picture and your own information to answer the following questions bellow: 1.1 What does the headgear of a mine do? ( 1)  \n_____________________________________________________________________  \n_____________________________________________________________________  \n1.2 What happens in the winding house of a mine? ( 1)  \n_____________________________________________________________________  \n1.3 Explain what a sheave wheel is, and what its function is? ( 1)  \n_____________________________________________________________________  \n1.4 What does a head frame do? ( 1)  \n_____________________________________________________________________  \n1.5 Why do the legs on a head frame always slope towards the winch? ( 1)  \n_____________________________________________________________________  \n1.6 What are the two parts of lift that go down a mine called? ( 1)  \n_____________________________________________________________________  \n1.7 What do these two parts of the lift –listed in question ( 1.6 ) do? ( 1)  \n_____________________________________________________________________  \nPage 3 of 8 P.T.O  \n1.8 What is the difference between the two mine winches shown in figures A and B? (2 )  \n________________________________________________________________________  \n________________________________________________________________________  \n1.9 If the mine winch drum diameter is 6m, calculate how far the cage will drop for each single rotation of the drum, use the formula C =2πr: (3)  \n1.10 If the mine winch drum diameter is 6m, calculate how far the counterweight will lift for each single rotation of the drum, use the formula C =2πr:  \n(3)  \nTotal: [ 15]  \nACTIVITY 2  \nDESIGN SKILLS  \n2.1 Design brief with specifications and constraints.  \n2.1.1. Write the design brief: (2)  \n___________________________________________________________________________  \n___________________________________________________________________________  \n___________________________________________________________________________  \n2.1.2. List any 2 specifications: (4)  \n___________________________________________________________________________  \n___________________________________________________________________________  \nPage 4 of 8 P.T.O  \n2.1.3. List any 2 constraints. (4)  \nTotal:  \n[ 10]  \n2.2 Use the space below to sketch two initial ideas (3-D Isometric) to meet the requirements given in the scenario. Your generated freehand designs must include dimensions and labels. (5X2=  \n10)  \nAssessment criteria of freehand designs  \n\n| Level 7 Outstanding\u003Cbr>Mark (5) | Level 6 Meritorious Mark ","cbCaitL28NP3Q5hg","https://ap.wps.com/l/cbCaitL28NP3Q5hg","pdf",272370,"English","# ACTIVITY 1\n## PROBLEM STATEMENT / SCENARIO / CONTEXT\n## Mine shaft headgear, head frame and winch\n# ACTIVITY 2\n## DESIGN SKILLS\n### Design brief with specifications and constraints\n### Sketch two initial ideas (3-D Isometric)\n## Assessment criteria of freehand designs","[{\"question\":\"What is the purpose of mine shaft headgear in the scenario?\",\"answer\":\"It must transport miners and equipment 500 m underground and lift platinum ore weighing 10 tons back up to the surface.\"},{\"question\":\"How do you calculate how far the cage drops per single rotation of the drum?\",\"answer\":\"Use the formula C = 2πr with the given drum diameter (to determine the circumference for one rotation).\"},{\"question\":\"What is required in Activity 2 for the design portion?\",\"answer\":\"Write a design brief including specifications and constraints, then sketch two 3-D isometric freehand designs that include dimensions and labels.\"}]","GRADE 8 - MECHANICAL SYSTEMS AND CONTROL - MINI-PAT - ASSESSMENT GUIDELINE | PDF",25]