Abstract: A blast movement monitor for measuring the movement of material within a body of material as a result of a blasting operation, the monitor including: a housing having an interior chamber defining an inner surface; and an internal communication device that is received immediately within the interior chamber of the housing, the internal communication device including: a body portion; an electric coil wound around the body portion; a circuit board electrically connected to the coil; a battery electrically connected to the circuit board; an end portion associated with one end of the body portion; and a cap associated with an opposing end of the body portion that encapsulates the body portion and sealingly houses the body portion; wherein the internal communication device is biased to facilitate self-righting of the internal communication device to a desired orientation within the interior chamber independent of the orientation of the monitor.

Abstract: A blast movement monitor for measuring the movement of material within a body of material as a result of a blasting operation, the monitor including: a housing having an interior chamber defining an inner surface; and an internal communication device that is received immediately within the interior chamber of the housing and which is adapted to transmit a signal to an external communication device and/or to detect a signal transmitted by the external communication device; wherein the internal communication device includes a body portion and opposing end portions, the end portions being configured such that they are complementary with the inner surface of the interior chamber and the internal communication device being biased to facilitate self-righting of the internal communication device to a desired orientation within the interior chamber independent of the orientation of the monitor.

Abstract: A blast movement monitor for measuring the movement of material within a body of material as a result of a blasting operation, the monitor including: a housing having an interior chamber defining an inner surface; and an internal communication device that is received immediately within the interior chamber of the housing, the internal communication device including: a body portion; an electric coil wound around the body portion; a circuit board electrically connected to the coil; a battery electrically connected to the circuit board; an end portion associated with one end of the body portion; and a cap associated with an opposing end of the body portion that encapsulates the body portion and sealingly houses the body portion; wherein the internal communication device is biased to facilitate self-righting of the internal communication device to a desired orientation within the interior chamber independent of the orientation of the monitor.