The development of an analysis methodology with embedded identification of significant issues regarding the use of steelmaking slags from secondary metallurgy in agriculture for acidic soils improvement leads to "elimination” of "waste" term assigned for Ladle Furnace (LF) slag and determines its conversion into useful by-product and environmentally friendly. This paper analyzes comparatively three Romanian sources of LF slag:

1) a steel manufacturer for power industry equipments fabrication (Source 1) ,

2) an alloyed steel manufacturer  for the obtaining of rolling stocks (Source 2), 

3) a  steel manufacturer as long semi-finished forms (Source 3).

Each of these sources (companies) have particular  characteristics of the steel manufacturing and LF slags storage which have been investigated in the paper in the attempt to exploit them as secondary resources to obtain materials for  acidic soils amelioration.