La 15 Tlhakubele ke letsatsi la bo40 la machaba la litokelo tsa bareki, mabapi le sehlooho sa "ho khothaletsa toka ea tšebeliso", k'hamphani ea ka ka mefuta e fapaneng ho tataisa tšebeliso ea saense le e utloahalang, tlhokomeliso ea litokelo, joalo ka karolo ea moetsi oa li-bearing block tsa mesamo, re boetse ra etsa tšepiso ho bareki ba rona, ho netefatsa boleng ba lits'ebeletso, ho sireletsa litokelo le lithahasello tsa bareki. Letsatsi la Lefatše la Litokelo tsa Bareki, le tšoaroang ka la 15 Tlhakubele selemo se seng le se seng, le thehiloe ke Consumers International ka 1983. Morero oa Letsatsi ke ho holisa phatlalatso ea tšireletso ea Litokelo tsa Bareki, ho hohela tlhokomelo ho Litokelo tsa Bareki ho potoloha Lefatše, le ho khothaletsa tšebelisano-'moho le phapanyetsano lipakeng tsa mekhatlo ea Bareki linaheng le libakeng tse fapaneng. Ho sireletsa litokelo le lithahasello tsa bareki hamolemo boemong ba machaba. Re boetse re ikemiselitse ho khothaletsa tšebelisano-'moho le phapanyetsano lipakeng tsa boholo ba bareki, phatlalatso ena. Re lumela hore k'hamphani ea rona e ntse e ntlafala le ho feta tšimong ea li-bearing. Lihlahisoa tsa rona tse nang le li-bearing tsa li-bearing tsa litulo tse ka ntle le tsona li tla bula 'maraka o moholo oa machaba.