Elefsina became synonymous with factories, which took up a central position in its urban fabric. New industries arrived through the purchase of older manufacturing units at the east end of Elefsina, unifying parcels of land, demolishing old facilities, and constructing new ones.
In 1925, based on articles 1 and 2 of law 2948 "on the promotion of industry and small-scale manufacturing" enacted in 1922, three land plots were expropriated in favor of the company "Charilaos and Kanellopoulos" for the "significant expansion of its factories in Elefsina".
FEK 1925 05 30/ 3166
In 1926, based on articles 2 to 5 and 19 of the same law 2948/1922, the ownership of parcels of land located in Vlycha was transferred by forced expropriation to the Athens-based “Greek Ordnance and Munitions Manufacturing Société Anonyme” (the latter-day PYRKAL) for the purpose of establishing ordnance and munitions plants in Elefsina.
FEK 1926 01 15 no.14
In 1938, the government of Ioannis Metaxas decided to install a military airport in Elefsina, on the grounds that the armament plants of the area constituted potential military targets which should be protected against enemies. Thus, Metaxas' government suggested that such an airport would be able to protect the wider area of Elefsina in case of war.
The positioning of the airport at the city’s north side not only established the limits of the city firmly, but also adjusted the building and plot ratio for parcels of land in the district, since the height of houses would now have to be considerably lower compared to the height of residences in other areas.
During the Colonels’ Dictatorship, the state expropriated whole districts to enable the establishment of refineries, shipyards, and steel plants. Two hundread stremmas on the coastline between PYRKAL and Elefsina shipyards were expropriated in 1972. Meanwhile, the state donated an additional 900 stremmas of sea for the construction of breakwaters. The aim was for the Latsis Group to develop a site for the refinery of PETROLA–the result, however, was the vanishing of the township of Psili Ammos or Elefsinia.
Beneath the tanks of the refineries, ship-breaking yards, and shipyards… the beach! What would Elefsina look like, if, instead of tanks, smokestacks, and half-sunk wreckages of ships, there were seaside townships, taverns, and beaches?
How would life in Elefsina be, if the rights of its residents over the city had greater power than those of the industries?
At Elefsinia, residents were forced or driven to concede their homes. At Vlycha, seaside areas which had escaped PYRKAL’s takeover were ceded for exploitation by shipbuilders and shipbreakers. Now, the seaside townships and beaches exist only in people’s testimonies.
The establishment and expansion of Chalyvourgiki at the opposite direction from Elefsinia and Vlycha required embankment and backfilling works, and gradually consumed ever broader areas of the city. In 1972, amidst the Colonels’ Dictatorship, Chalyvourgiki was granted permission to construct embankments.
In 1974, the sea around the plant was backfilled with waste. It has been calculated that the area of the factory reached 500 stremmas over a period of fifty years. In 2010, Chalyvourgiki acquired the ownership of 620.5 stremmas of sea which had already been filled with soil.
A port was constructed on the soil-covered waste dump in 2012.