Abstract: A method, apparatus, and computer instructions for managing user lists. A group of instant messaging addresses used most frequently by a user of an instant messaging client on the communications device is identified. The identified group of instant messaging addresses is displayed visibly within a display in the communications device.

Abstract: A system and method for controlling the flow of documents by associating Globally Unique Identifiers with each original document, each reply document, each copy document and each forwarded document, such as email messages. Historical analysis is performed on a locally stored history records containing the Globally Unique Identifiers extracted from received documents to determine which recipients are active participants and which are inactive participants, according to user preferences and thresholds. Lists for direct recipients (e.g. “To” list), carbon copy recipients, and blind copy recipients are automatically proposed to a user of a document handling system when authoring a new document, replying to a document, or forwarding a document, according to the results of the historical participation analysis, thereby stemming information flow to participants who are not active in an ad hoc asynchronous conversation.

Abstract: A fluid supply system for a rotary cutter head of mining machines comprises a plurality of nozzles for directing air flow inducing sprays in the vicinity of the cutter head, and sensor means for sensing a preselected operational condition of the fluid supply to the nozzles and for deriving a signal indicative of the sensed preselected condition.

Abstract: A rotary cutter head for a mining machine comprises a hub assembly drivably mounted on a drive section of the mining machine and a barrel component secured around and co-axial with the hub assembly, the barrel component supporting cutter tool-carrying loading vanes. Ventilation means provided on the cutter head comprise air flow inducing means for inducing air flow along a first path section within the barrel component and in a general direction towards the mining machine side of the cutter head, and along a second path section outside the barrel component and in a general direction away from the mining machine side of the cutter head. Air flow deflector means are provided for urging at least a portion of the induced air flow flowing along the first path section towards the air flow flowing along the second path section.

Abstract: A rotary cutter head drivably mountable on a rotary drive shaft of a mining machine comprises a hub assembly drivably mountable on the drive shaft and a barrel component secured around the hub assembly. Ventilating means comprising tubular elements are mounted within the barrel component and define passages along which air flow inducing sprays are directed from nozzles. The nozzles are mounted on a distributor block constituting part of the fluid feed system for the cutter head.

Abstract: A fluid supply system for a rotary cutter head for a mining machine, comprises a relatively low pressure feed arrangement for feeding relatively low pressure fluid to discharge nozzles directing fluid sprays towards the cutting zone of the cutter head, and a relatively high pressure feed arrangement for feeding relatively high pressure fluid to discharge nozzles emitting air flow inducing sprays.

Abstract: A rotary cutter head having generally helical loading vanes for urging cut rock or mineral towards a mining machine supporting the cutter head is provided with air flow inducing means for inducing an air flow in a direction substantially away from the mining machine.