sentences:  The exchange became operational on 15 April 1998 with TOL Gas Limited listing as the first company followed by the Tanzania Breweries Limited (TBL) during the same year.The delay was due to the necessary background operational preparations that were inevitable such as training of brokers and formulation of issuance and trading rules.On 29 June 2015 the Dar-es-Salaam Stock exchange re-registered to become a public limited company.