When it comes to minerals found in our phones, laptops, cars and planes, most are found in the resource-rich mines of West Africa.
Mineral exports are a major economic driver of nations such as Nigeria, Burkina Faso and Niger, and are predicted to rise from 109,000 tonnes a year to 3.4 million tonnes a year by 2030.
This dizzying development needs infrastructure to match, with reliable transport which can shift commodities from the sites where they are unearthed, to major ports from where they could be exported.
Railways, considered one of the most cost-effective ways of transporting goods for long distances over land, are sparse in West Africa, with fragmented lines which are not connected to a bigger network.
For this reason, countries in the region and mining companies are investing in a massive rail project which, when completed, will be 3,000 km long and link Benin, Burkina Faso, Niger, Ivory Coast, Ghana, Nigeria and Togo.The network will combine newly constructed tracks with existing ones.