Drug-related crimes comprise four of seven federal grand jury indictments issued this week in Salt Lake City, ranging from charges of possessing 50 kilograms of cocaine to carrying a firearm in a drug offense.

A scattering of non-drug violations are also alleged.Those indicted are:

- Eugenio D. Raigosa-Zapata and Hernan Alvarez, charged with possessing 50 kilograms of cocaine on Dec. 20, 1988. Prosecutors claim an officer discovered the drugs when he received permission to search their station wagon at a roadblock on I-70 in Emery County.

Raigosa-Zapata is a resident of Colombia. Alvarez said he was from Venezuela, but prosecutors said they think he is a Colombian too.

- Joseph A. Martinez, also known as Archie Martinez, and Debbie Martinez. They are accused of possessing cocaine, conspiring to distribute it and possessing marijuana.

Debbie Martinez is also charged with possessing methamphetamine. Joseph Martinez is charged with four counts of distributing cocaine, as well as possessing cocaine and carrying a pistol in connection with a drug trafficking crime. All counts in the indictment allege violations occurred in late December 1988.

- Thomas Edward Elrod and Richard Anthony Castanada, charged with attempting to manufacture methamphetamine and conspiring to manufacture it, on Jan. 5 in Wellington, Carbon County. Elrod also faces four firearms counts.

- Charles Lewis Randall, charged with conspiring to distribute cocaine starting Sept. 14, 1987. He is also charged with possessing six ounces of cocaine, intending to distribute it.

- Fred Drew Solomon, charged with possessing a firearm by a convicted felon. The indictment says that on March 13, 1987, he was convicted of forgery in 4th District Court, Utah County, but that on Jan. 5 he possessed a semi-automatic pistol.

- Ryan Black, charged with assault in Roosevelt on Sept. 3, 1988. The indictment says the assault seriously injured the victim.

- Jesus Maldonado, also known as Pedro Castro; Leanne Stone; and Jose Valente Leon Carrillo, charged with use of false Social Security numbers, or aiding and abetting in their use.