002/19-09-2007-ECCC-OCIJ ЮŲŠ / No: D427 329. Overall responsibility for construction of Trapeang Thma was that of Val alias Aok Haun,1354 a Sector 5 CPK cadre of the Northwest Zone1355 who would frequently visit the worksite to inspect progress.1356 Val was the Chief of the Sector 5 Mobile Work Unit1357 and as stated by witness testimony, it was him “who adopted the plan to choose the forces from the district to go to build the Trapeang Thma Dam”.1358 330. Assisting Val in the supervision was Hat, Phnom Srok District Committee,1359 with whom Val would liaise and communicate. Val was arrested and transferred to S-21 in June 19771360 as well as Hat in September 1977 after accusations of being traitors,1361 prior to the completion of the dam. 331. The Secretary of Sector 5 of the Northwest Zone was Man Chun alias Hoeng.1362 He was arrested in September 19771363 and replaced by Heng Rin alias Mei alias Noeov Rin until his arrest on 16 November 1978,1364 which was followed by his execution on 15 December 1978.1365 332. Others supervising the construction of the dam were Muol Sambat alias Ta Nhim alias Ruos Nheum alias Moul Un, Secretary of the Northwest Zone Committee who visited the dam construction site several times before its completion1366 and Cheal, a member of the Sector 5 Committee,1367 both of whom would later be arrested in 1978 and 1977 respectively.1368 333. The construction site was visited several times by CPK leaders.1369 There is evidence that Pol Pot and Khieu Samphan visited Trapeang Thma at various points during its construction.1370 One witness refers to Ieng Sary visiting Trapeang Thma with Pol Pot. However, the witness’ knowledge of this is only by way of hearsay and he did not personally see the Charged Person at the worksite.1371 Working and Living Conditions 334. Thousands of people were made to participate in the construction of Trapeang Thma.1372 One former worker estimates the figure at approximately 15,0001373 whilst another states “it was the entire Sector 5, combined with people in the cooperatives”.1374 Other witnesses talk of “thousands” or of “tens of thousands” of workers participating in the construction of the dam.1375 The Chinese press report on the visit of a Chinese delegation puts the figure at 20,000 workers1376 and similarly a CPK Telegram (reporting on a visit to the dam by Yugoslavian journalists) also puts the figure at 20,000.1377 Extraordinary Chambers in the Courts of Cambodia, National Road 4, Choam Chao, Dangkao Phnom Penh Mailing address: P.O. Box 71, Phnom Penh; Tel: +855(0)23 218914 Fax: +855(0) 23 218941. 87