Uranium exploration in the vicinity of the Hook-Carter property has been recorded since 1969 by a large number of companies. Several major conductive trends were identified on the Hook-Carter property and neighbouring properties, including the Patterson Lake, Derkson and Carter Corridors. Significant past results on the current Hook-Carter property are as follows:
In 1996, Uranerz Exploration and Mining discovered through boulder sampling that the area north of Derkson Lake up to Carter Lake and along the Williams River was geochemically anomalous with elevated boron (dravite), kaolinite and chlorite.
In 1997, UEM Inc. and Cameco completed Fixed Loop Time-Domain Electromagnetic (FLTEM) and discovered several conductive trends, leading to a follow-up boulder sampling program. In 1998, the same companies completed additional ground EM surveys and a larger airborne GEOTEM survey.
Several Hook-Carter claims were drill tested between 1999 and 2003 by Cameco Corporation with a total of six drill holes. Several holes displayed criteria favourable to unconformity uranium deposits with anomalous clay alteration, quartz dissolution, Athabasca Group and basement structure and/or anomalous geochemical enrichment.
Between 2005 and 2007, ALX's predecessor company, ESO Uranium Corp., carried out airborne EM surveys, ground resistivity and diamond drilling. PIMA (infra-red spectroscopy) analyses performed on drill core from the 2007 drilling were re-evaluated in 2013. This work identified important clay alteration minerals including sudoite (chlorite), dravite, smectite/illite, sericite, and probable carbonate. In addition, anomalous values of pathfinder elements including nickel, copper, silver, tungsten, and mercury were returned from samples of Athabasca sandstone, which along with the dissolution and silicification noted in drill logs provide evidence of hydrothermal alteration.
Alpha Exploration Inc. (a predecessor to ALX) engaged CGG Aviation (Australia) Pty Ltd. of West Perth, Australia to perform a FALCON® airborne gravity gradiometer gravity survey in late 2014, which included magnetic and laser scanning digital elevation components: 987 line-km were flown at 200-metre line spacing covering a grid area of approximately 10 x 14 km. The survey provided important gravity and magnetic data for integration with known geology and drill hole information.
In 2016, ALX completed a Sub-Audio Magnetic Transient Electromagnetic (HeliSAM TEM) geophysical survey conducted by Gap Discovery Geophysics.The survey provided a total of 115 line-km and confirmed the presence of multiple basement conductive units within the Carter Corridor where it crosses the Property.