Although mining in Burundi was a lot craftwork till today, industrial mining in Burundi is starting.

Burundi is a producer of columbium (niobium) and tantalum ore, tin ore, and tungsten ore, and some deposits of gold which are designated for export.
Burundi has resources of copper, cobalt, nickel, feldspar, phosphate rock, quartzite, and rare reserves of uranium, and vanadium.
Mining is primary focused on gold, wolframite, coltan, cassiterite.
The country is also a producer of limestone, peat, sand and gravel for domestic consumption and as building materials.

Akezanet: 5 Companies are operating in mining in Burundi:
.Rainbow Mining Burundi in Bujumbura,
.Tanganyika Mining Burundi in Cibitoke,
.African Mining Burundi in Muyinga,
.Comibu à Kayanza,
.Ntega Mining Burundi in Kirundo.

Hereby some links to recent articles on mining in Burundi:

La société NTEGA MINING BURUNDI lance l’exploitation d’une mine de coltan au Burundi

Le Burundi, 2ème réserve de coltan de la région après la RDC