ane , ▁J wan eng ▁and ▁D amt sh aa ▁M ines . ▁The ▁four ▁mines ▁have ▁contributed ▁significantly ▁to ▁B ots w ana ’ s ▁so cio - e conom ic ▁growth ▁through ▁diam ond ▁re venue , ▁transform ing ▁the ▁country ▁from ▁an ▁agricult ur ally ▁based ▁economy ▁in ▁the ▁ 1 9 6 0 s ▁to ▁a ▁country ▁that ▁has ▁consist ently ▁displayed ▁one ▁of ▁the ▁highest ▁economic ▁growth ▁rates ▁in ▁the ▁world . ▁ ▁Production ▁All ▁diam ond ▁min ing ▁in ▁B ots w ana ▁is ▁controlled ▁by ▁Deb sw ana ; ▁there ▁are ▁no ▁private ▁diam ond ▁min ing ▁operations ▁in ▁the ▁country . ▁ ▁Com b ined ▁production ▁of ▁the ▁company ' s ▁four ▁mines ▁tot aled ▁ 3 0 ▁million ▁car ats ▁( 6 , 0 0 0   kg ), ▁nearly ▁a ▁quarter ▁of ▁the ▁world ' s ▁annual ▁production ▁of ▁around ▁ 1 3 0 ▁million ▁car ats ▁( 2 6 , 0 0 0   kg ). ▁The ▁high ▁value ▁per ▁weight ▁of ▁diam onds ▁m ined ▁by ▁Deb sw ana ▁has ▁made ▁the ▁company ▁the ▁leading ▁producer ▁of ▁diam onds ▁by ▁value ▁in ▁the ▁world . ▁Deb sw ana ▁is ▁also ▁the ▁second ▁largest ▁producer ▁by ▁volume . ▁ ▁In come ▁and ▁prof its ▁ ▁Econom ic ▁impact ▁Diam ond ▁min ing ▁activities ▁have ▁fuel led ▁much ▁of ▁the ▁growth ▁in ▁B ots w ana ' s ▁economy , ▁allowing ▁it ▁to ▁grow ▁from ▁one ▁of ▁the ▁poor est ▁countries ▁in ▁the