Category: natural resources

  • From the ground in Kenya to the gold stud in the ear

    From the ground in Kenya to the gold stud in the ear

    Artisanal gold mining in Kenya’s Western region is raising environmental and public health concerns as mercury contamination threatens both the miners and local water sources.

    At sunrise in western Kenya’s Migori County, small groups of men and women gather at makeshift gold pits, sifting through soil in search of a precious livelihood. Across Kenya’s western counties, tens of thousands of people have turned to artisanal gold mining — small-scale, informal mining operations, often characterized by manual labor and the use of basic tools and low-tech equipment — as global gold prices rise and traditional farming incomes decline. 

    But while mining offers a vital economic lifeline, it brings a toxic legacy: mercury contamination that threatens health, water and livelihoods far beyond the mines.

    A growing Industry in Western Kenya, small-scale gold mining has expanded rapidly in counties such as Migori, Kakamega and Vihiga. Recent estimates suggest that Kenya is home to more than 250,000 artisanal miners, with more than one million people depending on gold-mining for their livelihoods. In Migori alone, gold mining injects an estimated US$37 million into the local economy each year.

    Despite the dangers, mining remains the most viable source of income for many. Surveys in Migori found that a significant majority of miners would not leave the industry, citing a lack of alternatives. 

    Extracting gold

    Women make up an estimated 38% of Kenya’s small-scale gold mining workforce, often involved in ore processing — where mercury exposure is highest — yet receive just 11% of the sector’s revenue. 

    Nashon Adero, a lecturer at Taita Taveta University and a Kenyan mining policy expert, said that women’s roles and vulnerabilities are often overlooked in policy discussions. 

    Herman Gibb, a lecturer at George Washington University and managing partner and president of Gibb & O’Leary Epidemiology Consulting said that mercury is widely used by artisanal miners because it is cheap, accessible and effective at extracting gold from ore. 

    “It’s the easiest way for miners with limited resources to extract gold,” said Gibb, who used to work for the U.S. Environmental Protection Agency. 

    The process, known as amalgamation, involves mixing crushed ore with liquid mercury. Mercury binds to gold, creating an amalgam, which is then heated to vaporize and remove the mercury, leaving behind pure gold. But Gibb said that this heating releases toxic mercury vapour, endangering miners and nearby communities. 

    Mercury poisons

    Researchers, including Gibb, have warned that mercury vapour can settle in households, exposing families, particularly children and pregnant women. Biomonitoring studies, including hair sampling, have shown high levels of exposure among women in small-scale gold mining regions. 

    However, research shows that testing capacity in rural Kenya is limited, and the logistics of sampling, storage and analysis pose additional barriers to effective surveillance. Mercury poses a variety of risks, depending on the form of exposure and who is exposed. 

    Elemental mercury, the liquid form used in gold extraction, poses serious risks when inhaled as vapour, which can cause neurological symptoms such as tremors, memory loss and cognitive impairment. Prolonged exposure can also cause kidney damage. 

    “Mercury vapour can damage the brain, especially in children whose nervous systems are still developing,” Gibb said.  

    Methylmercury, on the other hand, is an organic form of mercury created when elemental mercury enters water bodies and undergoes microbial transformation. It accumulates in fish and other aquatic organisms, entering the food chain. Methylmercury is particularly harmful to pregnant women and children, as exposure can lead to severe developmental disorders, intellectual disabilities and long-term neurological damage.

    Chemicals in the food stream

    Gibb said that when methylmercury enters the food chain, the risks become even more serious. “This is a toxin that affects the most vulnerable in invisible but lasting ways,” he said.

    Although Kenya’s Mining Act of 2016 bans mercury use in mining, enforcement remains weak, and mercury is still widely available in local markets. News reports from the Kenya Chamber of Mines, the main mining industry organization in Kenya, state that many miners lack awareness of its dangers or access to protective equipment. 

    A 2023 study found that groundwater within six kilometers of mine sites in Migori contained mercury levels exceeding Kenya’s safe drinking water limit of 0.001 mg/L during the dry season. Soil samples from mine tailings (waste materials left over after valuable minerals have been extracted) showed mercury concentrations above 9.6 mg/kg, surpassing the National Environment Management Authority discharge limits. 

    Kenya’s mercury crisis is part of a wider global problem. Gibb said that the World Health Organization estimates prenatal exposure to methylmercury causes more than 227,000 new cases of intellectual disability each year, contributing to nearly two million “disability-adjusted life years” — a measure of years lost to ill-health or disability. 

    Mercury ranks among the top chemical threats to global health. Gibb said that its burden is compounded by the fact that most harm is invisible and long-term, making it difficult to prioritize in health budgets. 

    Science diplomacy

    In 2017, Kenya ratified the Minamata Convention, an international treaty designed to protect human health and the environment from releases of mercury, committing to reduce mercury use and emissions. Yet implementation lags. A 2022 Auditor General’s report found that the Ministry of Petroleum and Mining had not mapped or formally designated artisanal mining zones in key counties.

    Adero, the Kenyan mining expert emphasized the need for “science diplomacy” — the use of geospatial technologies (mapping tools and location data) and data-driven reports to influence local and national policymakers. Recent GIS-based research (Geographic Information System, or mapping software that shows roads, rivers, houses etc.) show mercury levels remain high in soil and water near mines. 

    “This highlights enforcement gaps and spatial risks [risks due to location] that many policymakers overlook,” he said. 

    Monitoring mercury exposure in rural areas is especially challenging due to limited laboratory facilities, transportation and technical capacity. 

    “We cannot manage what we do not measure,” Adero said. “Without proper exposure tracking, policies are just words on paper. We need data that is local, current and trusted by both governments and communities.” 

    Enforcing regulations

    Gibb said that constraints around sample collection, storage and analysis hinder the ability to track exposure and enforce regulations. 

    The Migori county government has signed an agreement with the State Department for Environment and Climate Change to establish demonstration sites for mercury-free processing. But while these techniques can be effective, Gibb said, they require up-front investment, training and new equipment and that some alternatives such as cyanide also pose environmental risks. 

    Adero said that early adoption in countries such as Tanzania and Ghana shows promise but similar scale-up in Kenya remains limited. 

    Gender and social dimensions organizations such as the Association of Women in Energy and Extractives in Kenya address gender disparities by organizing cooperatives, providing training and advocating for gender-sensitive safety policies. 

    In his research, Adero found that significant gender gaps remain, with women overrepresented in the most dangerous roles but undercompensated. This research underscores that these disparities are rooted in systemic deprivation and limited access to education and financial literacy, he said. 

    Bureaucracy and fees

    While formalizing small-scale gold mining through Kenya’s Mining Act of 2016 could improve safety and access to technical assistance, progress is slow, hindered by bureaucracy and high fees. Adero advocates simplifying the permitting processes, reducing costs and exempting small-scale miners from fees — learning from successful models such as Ghana’s community mining schemes.

    Yet until real changes happen on the ground, artisanal miners remain caught between economic necessity and the invisible dangers of mercury poisoning. 

    “It’s what we know, and it works — you can see the gold right away,” said a miner from Migori. 

    But Dr. Adero warns that real progress requires concrete actions, not just policy declarations. Reliable, on-the-ground data to measure mercury exposure and inform decisions is key.

    As Kenyan miners struggle with mercury poisoning, consumers around the world unknowingly wear and invest in gold that carries hidden human and environmental costs. Ultimately, addressing mercury contamination is not just a local challenge, it’s a call to action for global accountability, connecting distant luxury markets directly to the miners who risk their health and lives for precious metals.

     

    Questions to consider:

    1. Why do some people in Kenya risk their health to mine for gold?

    2. What are some things the Kenyan government is doing to improve the lives of gold miners?

    3. Why do you think gold is considered so valuable?

     

    Source link

  • The mining of sand scars Kenya’s land

    The mining of sand scars Kenya’s land

    From space, Kenya’s sand-mining crisis is starkly visible. Satellite images reveal scars gouging riverbeds throughout its historic Rift Valley and fully extending border to border, west to east, from the shorelines of Lake Victoria to the Indian Ocean. 

    These growing scars tell the story of the nation’s booming construction sector and of a largely unregulated trade: sand harvesting.

    Sand is the world’s second-most consumed natural resource after water. It fuels construction booms globally, including in Kenya, where urban expansion and large infrastructure projects have surged. Yet sand is also among the most illegally trafficked natural commodities.

    In Kenya alone, around 50 million metric tonnes of sand worth roughly US$600 million are extracted each year, mainly for expansion of the nation’s capital, Nairobi, and major infrastructure projects. Yet the true cost of this extraction, particularly illegal operations, is far higher in terms of environmental degradation and human impact.

    “The scale of environmental crime related to sand harvesting is significant but poorly understood,” says Dr. Willis Okumu, a senior researcher at ARIN Africa, an organization dedicated to sustainable management of natural resources and environmental governance. 

    A multinational problem

    Okumu describes Lake Victoria — Africa’s largest lake by area, bordering Tanzania and Uganda as well as Kenya — as a convergence point for environmental crimes. These include illicit sand harvesting, charcoal burning and timber smuggling, facilitated by weak enforcement across bordering countries.

    Illegal sand harvesting strips riverbanks and lakeshores. It weakens soil structures, causes landslides and floods and devastates aquatic habitats. River systems feeding into Lake Victoria have suffered badly, threatening fisheries crucial to local livelihoods.

    These operations cause severe environmental impacts. Unregulated extraction weakens riverbanks, disrupts ecosystems, and significantly increases risks of flooding and deadly landslides. 

    River ecosystems, including those around Lake Victoria, suffer profound damage. Aquatic habitats and biodiversity are severely disrupted, jeopardizing livelihoods that rely on fishing and farming. Communities struggle with declining water quality and availability that are directly tied to unregulated sand extraction.

    In Mombasa, a city in southeastern Kenya along the Indian Ocean, unregulated sand extraction has altered river flows. This has disrupted irrigation systems, making it harder for farmers to grow food in a region already hit by drought.

    Sand loss and social ills

    Socially, the consequences are equally dire. The United Nations Environment Programme reports that “sand extraction and its trade are fuelling a myriad of social issues in Kenya, with violence and deaths related to sand trade widely documented.” School dropouts, teenage pregnancies and drug abuse spike as impoverished youth turn to illegal sand mining for quick income.

    Communities in the Rift Valley face a difficult trade-off: short-term survival through sand work or long-term sustainability. In Nakuru County, uncontrolled sand extraction has left homes exposed to erosion and collapse. Residents report that land beneath their feet is quite literally disappearing.

    Consolata Achieng, of Asieko Village in Nakuru County, told a local news reporter that all the land surrounding her property had been sold off to harvesters over the last eight years. “We were assured that harvesting had stopped but we still see workers and lorries every day,” she said. “A lot of people live around here and have nowhere to go. This is the place we call home.”

    Communities can also find themselves caught between environmental concerns and lack of alternatives. “All you need is a spade,” noted one senior Kenyan civil servant, highlighting how easy it is to mine sand. Labourers, including school-aged children, work in dangerous pits for low wages. 

    The lucrative nature of sand mining has attracted organized criminal groups that exploit the resource with impunity. Violent confrontations have occurred between cartels and local communities attempting to protect their resources, leading to injuries and fatalities.  

    These organized crime groups — known locally as “sand cartels” — are central to the illegal trade, often operating under the protection of corrupt state officials, enabling them to bypass regulations and continue illegal activities. 

    Countering illegal mining requires coordinated efforts

    According to ENACT Africa, a program that focuses on addressing transnational organized crime in Africa, weak co-ordination among law-enforcement agencies across borders allows such networks to thrive. Violent confrontations have occurred between cartels and local communities attempting to protect their resources, leading to injuries and even deaths. 

    Efforts to regulate the industry have largely failed due to corruption and ineffective governance. In a UNEP Global Sand Analysis report, a senior official bluntly observed: “All you need to do is pay,” reflecting systemic bribery and regulatory capture, which occurs when a government agency that was created to act in the public’s interest ends up serving the interests of the industry it’s supposed to be regulating. 

    UNEP has warned that sand is becoming dangerously scarce. It advocates for stronger global regulations, regional co-operation and alternative construction materials such as crushed rock and recycled debris.

    In Kenya, sand isn’t just used locally. It’s also smuggled to neighbouring countries and, allegedly, to international markets — further complicating enforcement.

    However, there are signs of hope. Kenyan authorities have created specialized investigative units in the Mining Police Unit to crack down on illegal extraction. Officials are also piloting new tools, such as satellite tracking and GPS monitoring of trucks, to improve oversight.

    Protecting the land

    Some counties are fighting back. In West Pokot county, authorities recently launched new sand-harvesting policies to control extraction and protect the environment. 

    In Makueni County, the government implemented a comprehensive sand regulation act that has significantly reduced illegal activities and environmental damage within its jurisdiction. When the county lifted its decade-long ban on commercial sand mining to boost revenue, the move sparked concern among residents, who fear the return of water shortages and environmental degradation.

    The persistence of illegal sand mining underscores the need for robust enforcement of regulations, community engagement and the promotion of alternative construction materials to reduce reliance on natural sand resources. 

    Without urgent and co-ordinated action, Kenya faces continued ecological destruction and intensified community conflicts. As Okumu emphasized, transparent governance and meaningful community participation are critical. “With currently poor public participation, rehabilitation work rarely follows in Kenya’s land-based sand mining projects,” he said, underscoring the critical need for reform.

    Research across Africa shows a consistent pattern: profits flow to powerful players, while environmental costs fall on the poorest. Labourers risk their lives in collapsing pits. Farmers and fishers lose the very resources they rely on.

    “We are running out of time,” Okumu said. “Without immediate regional action, environmental damage from sand harvesting will become irreversible, devastating ecosystems and the communities dependent upon them.”

     

    Questions to consider:

    1. Why is sand so valuable?

    2. How are countries like Kenya trying to stop the mining of sand?

    3. Can you think of ways concrete and cement are used near you? Could you think of alternative materials?

     

    Source link