2003 (early): floral/faunal growth and dark staining removed from the surface of preserved letters in situ using demineralized water and algicide (Florence Monier, Rui Nunes Pedroso).
Conservation
2004 (mid-June): mechanical removal with scalpel of salt accumulation from surface of crack running horizontally through sigma-upsilon-rho-alpha at end of line 1 (Rui Nunes Pedrosos, Frank Blondel).