This includes the relocation of Ming'omba and Kawama communities by Konkola Copper Mines (KCM) in Chililabombwe.
He also helped relocation of over 100 households in Mufulira affected by cracking of houses due to historical mining activities.
He has also negotiated, on behalf of government, World Bank support to mitigate historical environmental and social issues on the Copperbelt as well as the lead poisoning problem in Kabwe.
Between 2002 and 2017 the World Bank and other have committed in excess of $100 million to address historical environmental and social problems on the Copperbelt and Kabwe.
As a candidate for the newly formed (2013) Green Party of Zambia in the 2015 presidential election, Sinkamba earned 1,410 votes.