Kenya’s mining industry, which is expected to generate US$200 million in 2020, is expected to expand as more companies begin production next year.
After Shanta Gold, a mining company with operations in Kenya and Tanzania, announced that additional visible gold has been identified in seven different intersections, the western part of Kenya will attract large-scale gold mining in 2022. Lakeside Limited, another mining company, has started prospecting for gold in Bondo, Siaya County.
During the construction and operation phases of the mines, the projects are expected to create highly skilled jobs, improve roads and other infrastructure in the surrounding areas, generate revenue for the national and county governments, and generally boost the local economy.
For instance, Lakeside estimates that construction of its mine will cost US$1.86mn.
Unfortunately, increased mining has a strain on the environment, especially given that mining uses large amounts of water during the extraction and separation of minerals.
Water is an extremely efficient medium for supplying chemicals and mixing materials and it is even an essential ingredient for some chemical processes in mining. It is also the most convenient medium for gravitational and centrifugal separation of minerals from host rocks.
In most mining operations, water is sought from groundwater, streams, rivers, and lakes, or through commercial water service suppliers.
The fact is that the mine sites are often located in areas where water is already scarce and, understandably, local communities and authorities can oppose the mines using water from these sources.
And even where water is in plenty, such as in Kwale where Kenya’s largest mining operation is being done, water management can be a challenge.
The potential of heavy stormwater also increases after construction because of the increased ground surface sealing which inhibits percolation and consequent infiltration of water. When there are no well-designed storm drains, the rainwater can end up stagnating and hence creating conducive breeding areas for water-based vectors leading to transmission of diseases like malaria and cholera.
Fortunately, these challenges can be tackled by installing water management infrastructure that uses Weholite HDPE Structured Wall Technology.
The light nature of the Weholite pipes makes them easier to transport and install, a great advantage for projects where the mines are in remote and difficult to reach areas. Also, the technology has a 100-year service life when buried, which reduces the maintenance costs associated with such projects. Weholite technology can also be installed in built up areas with minimal disruptions.
A local mining company, Base Titanium, has used Weholite pipes for several applications over the last few years at its Kwale-based mine, while Anglo Gold Ashanti is using Weholite technology at its mine in the Geita region of Tanzania. This technology was delivered by Megapipe’s sister company Plasco Limited of Dar es Salaam.