We are Self –Motivated. We are passionate about our work. We are Sigma Minerals Limited. Today, Sigma has successfully completed 40 years of its prolific and self motivated operation with strong consideration of its 3 verticals viz. Transparency, Ownership and Accountability. The company has established its distinct brand identity in the field of Hydrated Lime, Quick Lime and Lime Powder and is the first company to acquire certifications of ISO 9001 and ISO 14001 amongst the Lime counterparts in the country.