To access the small oil rig monument in Rust, players will need to bring certain items, including keycards and fuses. The specific keycards required are blue, green, and red, as there are puzzle areas on the rig that require all three types of keycards to enter. However, according to a Rust feedback forum, players only need a blue keycard to hack the crate on the small oil rig. It is important to note that the small oil rig does not have any radiation, unlike the cargo ship event. In terms of loot, the small oil rig has 13 possible basic military or elite crate spawns, as well as normal barrels, oil barrels, and diesel barrels.