1951 Polish–Soviet territorial exchange
The 1951 Polish–Soviet territorial exchange or Polish-Soviet border adjustment treaty of 1951 was a border adjustment signed in Moscow between the Soviet-imposed People's Republic of Poland and the Soviet Union regarding roughly of land, along their mutual border. The agreement was signed on February 15, 1951 and ratified by People's Republic of Poland on May 28, 1951 and USSR May 31, 1951. It modified the border treaty of August 16, 1945 and entered into force on June 5, 1951. The exchange was made to the decisive economic benefit of the Soviet Union due to rich deposits of coal given up by Poland; these deposits were discovered well before World War II. Within eight years following the agreement, the Soviets built four large coal mines there with a total annual mining capacity of 15 million tons.
In exchange, the Soviet Union ceded part of the Ukrainian SSR's Drohobych Oblast : the city of Ustrzyki Dolne and the villages of Czarna, Shevchenko, Krościenko, Bandrów Narodowy, Bystre and Liskowate. All of this territory became part of the Krosno Voivodeship in 1975, and of the Subcarpathian Voivodeship on 1 January 1999. It was a stretch of Ustrzyki deposits of oil.
Poland gave up part of the Lublin Voivodship, with the cities of Bełz, Uhnów, Krystynopol and Waręż. All of this territory is now part of the Sokal Raion, Ukraine.
After World War II, the territory of Poland changed dramatically, moving westwards. Poland gained the former German provinces of Silesia and Pomerania, with the eastern part of Brandenburg and the southern part of East Prussia. The eastern border of the country was established roughly along the Curzon Line, leaving Białystok in Poland and Lviv in the Soviet Ukraine.
The border of Poland and the Soviet Union, delimited on the 1945 agreement remained almost unchanged until the early 1950s. Then, rich deposits of coal were confirmed in the so-called Bug River knee – Polish postwar territory between the upper Bug and the Sołokija River. The Soviet government decided to gain control over this land, which possessed not only coal, but also fertile black soil.
Negotiations
The Government of the People's Republic of Poland formally asked the government of the USSR to exchange a small border section of Poland with an equivalent border section of the territory of the USSR.In the political conditions of the time, the USSR's indication of the areas on the Bug and Solokiya was a wish that should have been accepted without discussion. During the negotiations held in Moscow in January and February 1951, both delegations tried to increase the value of the territory as much as possible. Initially, the Russians proposed to replace almost the entire Tomaszowski and Hrubieszowski Poviats along with the bend, remembering the rich forests and oil in the Bieszczady Mountains. The deputy minister of foreign affairs at the time was the well-known geographer Stanisław Leszczycki, who discreetly advised against such an exchange, reminiscent of a bazaar "machniom" rather than a fair transaction. Thus, the Poles rejected the original version of the agreement and, although Leszczycki was dismissed from his post at the end of 1950, the deal was to concern only the knee of the Bug in exchange, for which Poland was about to receive a piece of the Bieszczady Mountains with the only "metropolis" Ustrzyki Dolne.
The Soviet Deputy Minister of Foreign Affairs Lavrentev constantly emphasized that the USSR is giving Poland lands of great natural wealth. He also diminished the significance for the USSR-Ukraine of the railway line from Kovel to Lviv.
To the opinion of Polish negotiators about coal resources in this area, the Ukrainian deputy prime minister Korniyets, participating in the talks, replied that the research done at the border gave very poor results. And yet coal was known before the war. Initially, it was established that Poland should pay the difference resulting from a higher valuation of the territory surrendered by the USSR. Polish negotiators did not agree to such a solution, they were faced with the fact that it meant Poland's resignation from Niżankowice, Dobromyl and Chyrów. To Zawadzki's remark that this would cause that the railway line leading to Ustrzyki Dolne, which would be in Poland, would run through the territory of Ukrainian SSR, the Soviet Union did not react at all.
Agreement concerning the exchange
On 15 February 1951 the governments of People's Republic of Poland and Soviet Union signed a bill which ratified the change of the eastern border of Poland. According to the agreement, Poland transferred to the Ukrainian Soviet Socialist Republic of territory located west of the town of Sokal, which had been located in the Hrubieszów county of the Lublin Voivodeship. These towns are now located in the Sokal Raion of the Lviv Oblast. Several coal mines have been constructed there, and the former town of Krystynopol is now known as Chervonohrad.According to agreement, all real estate left behind in the exchanged territories, such as infrastructure, buildings, farms, and rail lines, were automatically transferred to the new owner and both sides relinquished all future claims. Moveable goods were allowed to be kept by private individuals under the condition that the owners had to take them when they left. The Polish population of the Sokal area was transferred in May 1951, mainly to the Recovered Territories. The inhabitants of the town of Belz settled in Ustrzyki Dolne.
Officially, the Polish side declared that the exchange took place on the Warsaw's initiative. However, in the early 1950s, Poland was de facto ruled by the Soviet Union and all pertinent decisions were made by Joseph Stalin.
Results
And indeed as a result of the exchange on the railway route from Zagórz to Przemyśl, PKP trains will pass through the territory of the USSR-Ukraine. They were closed and escorted by commuters inside with dogs and border guards standing on the steps of the wagons. The idea of obtaining oil resources in that area was quite doubtful. Polish geologists were well aware that the offer referred to small pond resources similar to those in the vicinity of Krosno, Jasło and Gorlice. They were described quite accurately on geological maps, and production at 85 tons per day did not have a significant impact on the volume of Polish imports of this raw material.Even though the territory ceded to Poland was roughly as large as the territory transferred to the Soviet Union, the land around Ustrzyki Dolne lacked industry, natural resources and fertile soil. On top of that, it was already depopulated during the 1947 Polish-Soviet Operation Vistula. In 1968–69 the Polish government of Władysław Gomułka completed the hydro-electric Solina Dam, long, and high, on the San river, which created Lake Solina. The territory is now part of Bieszczady County.