Abstract: Provided herein is a printhead for a printing apparatus. The printhead comprises a first burn line of heating elements disposed on a first surface of the printhead, and a second burn line of heating elements disposed on a second surface of the printhead. The second surface is opposite to the first surface. Thereafter, one of the first burn line of heating elements or the second burn line of heating elements is configured to perform a printing operation.

Abstract: An apparatus and method to present developing incidents to a user in accordance with a selected criteria. Where the incidents correspond to developing gas concentrations, gas samples can be compared to a selected threshold, and responsive to the comparison, a concentration indicating display, relative to a selected region being monitored, can be presented to a user. The displayed concentration indicating elements, in response to real-time samples, can expand on the visual presentation indicating the characteristics of a developing incident. Stored historical information can be represented for after action analysis.

Abstract: A method and apparatus where the apparatus performs the steps of receiving a location of a person; determining via a database a hazard level of the location confirming via a database that the person is qualified to be present at the location based upon a training level of the person for the determined hazard level of the location and wirelessly notifying the person to leave the location upon determining that the person is not qualified for the hazard level of the location based upon the training level of the person.

Abstract: A method and apparatus including the steps of a first file defining a set of geographic coordinates of a work area, a second file defining a set of geographic coordinates of a mustering zone, a plurality of portable wireless sensors, each having a geographic positioning system, each carried by a person within the work area and each determining its geographic location, an environmental monitoring system detecting a threat within the work area, a processor detecting a location of each of the plurality of wireless sensors and a processor generating an alert for each of the plurality of portable sensors that have not arrived within the mustering area within a predetermined time after the detected threat.