In a project/in project

A group of South Korean company officials will visit the Democratic People's Republic of Korea ( DPRK) to carry out field study for joining in Rajin-Khasan railway and port development projectbetween Pyongyang and Moscow, South Korea's unification ministry said on Sunday.

Source: "S. Korean firm officials to visit DPRK for Rajin-Khasan joint project", English CNTV.
Link: http://english.cntv.cn/20140209/103102.shtml

According to my dictionaries, "project" is a countable noun. I am wondering if the sentence should be written as follows (depending on the context).

1. "... to carry out field study for joining in a Rajin-Khasan railway and port development project between Pyongyang and Moscow..."
2. "to carry out field study for joining in Rajin-Khasan railway and port development projects between Pyongyang and Moscow..."

Thanks.