[1] The original mission of the LNBTP was to undertake all tests, studies and research concerning soils and construction materials for buildings and public works.

720/158 of 18 July 1994 authorized involvement of private laboratories in execution of public works and building contracts awarded by the State.

720/129 of 9 March 2001, still in force as of 2018, gave the LNBTP a monopoly on studies and geotechnical control of soils and materials for execution of public works and building contracts awarded in the name of the State, These must include a clause specifying the nature and frequency of the laboratory's interventions.

[1] A 2004 World Bank report noted that LNBTP functions included supervising technical and geo-technical studies for roads.

Companies that had been recommended for privatization over a five-year period included SOSUMO[a], SIP[b], SRDI [c], OTB[d], ALM[e], COGERCO [f], LNBTP and ONATOUR[g].

They could take a recruitment test if they wanted to continue with OBUHA, join the civil service as new exmployees with no recognition of their experience, or accept severance pay.