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08 August 2019 | Story Leonie Bolleurs
Zama Zama
Michelle Goliath played a major role in establishing the first ethically sourced, fair, women-owned, artisanal diamond process.

Michelle Goliath, a PhD student in the Department of Urban and Regional Planning at the UFS, has a passion for helping the most vulnerable people in society who have run out of conventional employment options. 

“My research includes ‘Zamaism’ psychology, a philosophy which looks at the contestation of space and rules, how people navigate the illegal when they are faced with desperate choices,” she explains.  

Michelle has been working with approximately 3 000 diamond mining ‘Zama Zamas’ (criminal miners) over the past three years. Together, they negotiated an agreement with private sector mining and public sector stakeholders to include the Zama Zamas as legal artisan miners in the formal mining economy.

One of the highlights of her career so far was being part of a big first: the complete, ethically sourced, fair, women-owned, artisanal diamond process.

Michelle explains: “A rough stone includes the story of the women who dig it from the earth, legally (under permit), ethically sourced. Instead of being exploited, the same women now sell their diamonds for full value to a legal tender house through a legal buyer or directly to the cutter and polisher. The cutter and polisher also train the women to cut and polish the stones themselves. The women then sell the stones to jewellery gold- and silver-‘smiths’ who artisanally craft this into an engagement ring or ‘Wakanda gem spear’, to be sold in the open market locally and internationally.”

She believes these products will become priceless works of art. “Like Picasso paintings, they are each uniquely produced by hand with a story and Kimberley process certificates,” she adds.

The story of the women

This project had a big impact on Elisa Louw, a former street seller and domestic worker. She tells her story: “I was tired of domestic work and decided to work at the mines as a Zama Zama. I began with nothing and had to borrow tools and learn from others.”

Elisa started working in the mines in 2013; in 2014, she found her first 75-pointer diamond which she sold for R1 500 on the black market. “The black market was good then,” she said.

She later recruited other Zama Zamas to register and obtain legal permits for mining. Elisa mined from 08:00 to 12:00 and from 13:00 to 16:00 she recruited people to start a legal mining co-op. “It was difficult then. People did not understand what it meant to be legalised,” Elisa explains.

But she worked hard and at the end of 2016, the Batho Pele Primary Mining Cooperative was established.

However, it was a hard and difficult journey before they were given their permits early in 2017. The mines took their IDs and issued them with eviction letters. “They called us names – terrorists, robbers, rapists, etc. But in a meeting with the South African Police Service, the Department of Mineral Resources, the Sol Plaatje Municipality, and the international Swedish Housing Company, Michelle spoke for us.”

“She represented the Swedish Housing Company and we thank the Lord for sending her to us. She informed all parties that we did not want to fight, but that we were looking for a licence to work. She helped us to obtain our legal permit to mine.”

“It was such a relief when we received the permit. I could go home and sleep without worrying about the safety of the old people and children who are mining.

“The permit changed my life as a woman. My voice is heard; my words count. I am proud of myself,” says Elisa. 

The two cooperatives they created, Batho Pele Primary Mining Cooperative and the Women in Artisanal Scale Mining, have already signed agreements with Canada and the USA for the export of fair-trade-certified gem products.

Blood, sweat and tears

The journey towards this big achievement took two years of literally blood, sweat, and tears. “Society labels Zama Zamas negatively as terrorists. In a way, you become a Zama at heart once you live with people every day who are fighting for economic inclusion. You fight the illegal diamond trade that exploited people as digging slaves. You fight formal mining, which is a difficult sector to enter as a woman. You literally fight others with stones for territory. You fight political fights, land fights, the system at every level, to seek an existence,” Michelle explains.

She believes the mining industry can be a tough environment. “It is exploitative at many levels. It showcases rare talent, but under duress. At artisanal scale it is even worse. The only future women have, is to lead themselves, to create their own fairer system, to redesign a full value chain that allows broader participation,” states Michelle.

News Archive

Mathematical methods used to detect and classify breast cancer masses
2016-08-10

Description: Breast lesions Tags: Breast lesions

Examples of Acho’s breast mass
segmentation identification

Breast cancer is the leading cause of female mortality in developing countries. According to the World Health Organization (WHO), the low survival rates in developing countries are mainly due to the lack of early detection and adequate diagnosis programs.

Seeing the picture more clearly

Susan Acho from the University of the Free State’s Department of Medical Physics, breast cancer research focuses on using mathematical methods to delineate and classify breast masses. Advancements in medical research have led to remarkable progress in breast cancer detection, however, according to Acho, the methods of diagnosis currently available commercially, lack a detailed finesse in accurately identifying the boundaries of breast mass lesions.

Inspiration drawn from pioneer

Drawing inspiration from the Mammography Computer Aided Diagnosis Development and Implementation (CAADI) project, which was the brainchild Prof William Rae, Head of the department of Medical Physics, Acho’s MMedSc thesis titled ‘Segmentation and Quantitative Characterisation of Breast Masses Imaged using Digital Mammography’ investigates classical segmentation algorithms, texture features and classification of breast masses in mammography. It is a rare research topic in South Africa.

 Characterisation of breast masses, involves delineating and analysing the breast mass region on a mammogram in order to determine its shape, margin and texture composition. Computer-aided diagnosis (CAD) program detects the outline of the mass lesion, and uses this information together with its texture features to determine the clinical traits of the mass. CAD programs mark suspicious areas for second look or areas on a mammogram that the radiologist might have overlooked. It can act as an independent double reader of a mammogram in institutions where there is a shortage of trained mammogram readers. 

Light at the end of the tunnel

Breast cancer is one of the most common malignancies among females in South Africa. “The challenge is being able to apply these mathematical methods in the medical field to help find solutions to specific medical problems, and that’s what I hope my research will do,” she says.

By using mathematics, physics and digital imaging to understand breast masses on mammograms, her research bridges the gap between these fields to provide algorithms which are applicable in medical image interpretation.

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