What is the percentage investment stake that Fomento de Construcciones
y Contratas has in the company Espelsa?

According to information on the web site of the Spanish Ministry of
Defense, Fomento de Construcciones y Contratas (FCC) owns Espelsa
outright.  In 1999, Espelsa was worth 4,700 million pesetas in total
and it defense arm was worth 650 million pesetas.
http://www.mde.es/mde/infoes/indus3/pi05.htm  (web page is in Spanish)

According to information on
http://www.afarmade.es/empresas.asp?pos=15, the web site of the
Spanish Association of Arms Manufacturers
Espelsa belongs to FCC, it was founded in 1977 and its Systems
Division was established in 1994 following the adoption of a policy of
diversification by GRUCYCSA (a daughter company of FCC). (web page is
in Spanish)

According to Yahoo Finance, Vivendi Environnement has joint control
over, and a 49% interest in, FCC. http://biz.yahoo.com/p/v/ve.html

Search strategy on Google: Espelsa, "Fomento de Construcciones y
Contratas"

first time I used the service, an answer within hours, to an anoying
little detail I just could not track down myself ... many thaks tehuti

nobbercon