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Application filed by Uretaanitekniikka OyfiledCriticalUretaanitekniikka Oy
Priority to FI873103ApriorityCriticalpatent/FI80316C/en
Publication of FI873103A0publicationCriticalpatent/FI873103A0/en
Publication of FI873103ApublicationCriticalpatent/FI873103A/en
Publication of FI80316BpublicationCriticalpatent/FI80316B/en
Application grantedgrantedCritical
Publication of FI80316CpublicationCriticalpatent/FI80316C/en
The invention concerns a procedure for the prevention of frost damage, in particular on country roads, car parks, farms etc. In the ground, at the spot where frost damage is to be prevented, at least one hole 5 is made to a depth of not more than six metres from the surface of the ground. In the hole polyurethane is sprayed, preferably to different depths. <IMAGE>
FI873103A1987-07-141987-07-14
Procedure for preventing freezing damage
FI80316C
(en)
Improving the essential conditions of plant cultures on rainless first desert lands by help of expediently formed surface soil stabilization securing better utilization of rainfall and ground moisture