Historically oolithic limestone, one of the first outlets for the La Gagne site and very reactive to acids by nature, was of interest to local farming from the 1950s.

This activity developed rapidly thanks to the development of a new range of soil improvement products addressing all the problems of different soils (unfired, mixed or fired soil improvement products with or without magnesia), but also thanks to its subsidiary RHÔNE-ALPES AMENDEMENTS, which in partnership with regional Agricultural Distribution provides a commercial presence geared towards the logistical organization of an efficient and mobile spreading service. Ten or so spreading units equipped with 4x4 trucks each fitted with a site storage tank are assigned to this activity.

Tracteur epandage champs Chaux et Ciments de Saint Hilaire is a member of the Union des Industries de la Fertilisation and also subscribes to the technical approach.