The rivers in Ghana's Ashanti area have a sickly brown color. The land has gashes, holes cut by excavators.The air is filled with the sound of mining equipment.Small mining operations are a common sight in central Ghana.Here, mine workers dig deep into the earth in search of bullion. But not everyone returns alive.Earlier this year, six miners were killed when an earthen wall collapsed in Kyekyewere, a village in the Ashanti Region.Local officials say a collapse last year killed 17 people at a small mine in Ghana's Central Region.Sebastian Aduko has worked in the mining business for 13 years.He says the risk is undeniably dangerous, but can be lessened if mines are built the right way."The moment we are all rushing to collect what we all wanted from the ground there. So definitely it will collapse.So that's why we can explain that the other side, we heard that maybe this hole have collapse, maybe three, 10 people have died through there.Because, if we are watching that, there's not anything that look like a cage that we are using like here."