Abstract: A rock drilling arrangement, rock drilling rig and drilling method is provided. The rock drilling arrangement includes a drilling boom, which is mountable to a carrier of the rock drilling rig. The boom is provided with two rock drilling units arranged movably in the longitudinal direction of the boom. Further, the drilling units may be moved independently relative to each other.

Abstract: A rock drilling arrangement, rock drilling rig and drilling method is provided. The rock drilling arrangement includes a drilling boom, which is mountable to a carrier of the rock drilling rig. The boom is provided with two rock drilling units arranged movably in the longitudinal direction of the boom. Further, the drilling units may be moved independently relative to each other.

Abstract: A method, an arrangement, and a computer program product for a multiplayer game. The multiplayer game includes a display shared by players, a game engine and an interface unit for enabling communication between player devices, the game engine and the shared display. A game situation is formed for each player, and a summary is formed of the players' game situations. The summary of the players' game situation is transmitted to be displayed on the shared display, and the game situation of each player is transmitted to the player device of the player in question.

Abstract: The object of the present invention is a method and arrangement in making of mechanical pulp to reduce the amount of organic dissolved and colloidal substances in the pulp making process water by treating a part of the process water. According to the method the treating is carried out by leading the process water filtrate, separated from the pulp by a press located before bleaching, to pre-treatment, where elongated fibres are fractionated from the process water to be treated. The filtrate that has passed the pre-treatment is led to membrane filtration, where at least part of the organic dissolved and colloidal substances included in the process water are separated from the rest of the process water. The membrane filtration concentrate i.e. the colloidal and dissolved substances separated from the process water, is led to further treatment and the permeate i.e. the process water that has passed the membrane filtration is led back to the pulp making process.