Hoshi is seen joining the MACO's for a meal, and introduces herself. It was established earlier that Enterprise had been in the expanse for 6 weeks, and it also took a couple of weeks to get there. It is unrealistic that a senior officer hadn't met the MACO's by this point.
When Trip is in her quarters T'Pol's robe repeatedly goes from tightly to loosely tied.
Given the density of liquid platinum (19.77g/cm^3) the price for Archer's visit to the Xindi laborer weighed over 25 pounds and (at the cost of platinum in 2003, when the episode was filmed) worth over $190,000. Judging from the ease with which he was able to lift the container and wave it around, it seemed a lot lighter. Furthermore, the melting point of platinum is over 3,000°F, which would make a container of liquid platinum hot to hold.
The Xindi miner that Archer and Trip help to escape the mining facility is seen climbing a ladder to the surface. From the camera angle, one can plainly see a "Vibram" logo on the sole of his boot - clearly a goof, unless, of course, Vibram became an intergalactic company so large that, by the 22nd Century, it sold its products in the Delphic Expanse.
Major Hayes addresses Lieutentant Reed as if Reed is the superior officer. However, a ground forces major is the equivalent of a naval lieutenant commander; regardless of where they are, Hayes outranks Reed by one grade.