The environmental remediation work at Montesinho mine consisted of a first phase followed by a complementary phase, in which the main activities were:
- Outer fencing off of the mining area (> = 50 ha) to prevent intrusion;
- Detailed inventorying on the surface of the shafts/chimneys/galleries and subsidence/landslides;
- Protection/sealing of wells, galleries and chimneys;
- Smoothing of slopes;
- Forming of slopes;
The main and complementary contract were awarded, respectively, to the consortium Tecnovia – Sociedade de Empreitadas, SA / LTO – Lavouras e Terraplenagens do Oeste, Lda and to Construções António Joaquim Maurício, SA, for a grand total of € 1,539,204.44 and a total duration of 230 days.
The investment made was co-financed by the Northern Regional Operational Programme under the Third Community Support Framework and enabled the restoration of minimum conditions of safety for the area, turning it into a space people could use without fear of falling into the mine shafts and chimneys located in the middle of the heap.