Galactic Radiation and Background (GRAB) was the covername for Project Dyno ELINT intelligence satellites operated by the U.S. Naval Research Laboratory (NRL) shortly after the Cold War U-2 incident of 1960. The satellites carried two sets of instruments: an unclassified experiment (called Solrad) and a then-classified payload to collect electronic intelligence (ELINT) (called Tattletale). Of five attempted launches, two missions were successful. The program is also known by the later codeword Canes.

Grab may refer to:

• Grab (tool), a mechanical device
• Grab (software), a screenshot application
• Grabs (skateboarding)
• Hermann Grab (1903–1949), Bohemian writer of German language

Grabbing er en oppgave veldig lik mudring. I stedet for sand og slam består massen som blir fjernet ifra havbunnen for det meste av stein som er sprengt løs ifra havbunnen.