What's the burn on this?

Just use 60 min of circuit training or aerobics or something active like that. Were you moving the whole time or did you take breaks?

This site calculates on your age and weight, so just log it in. This whole thing is an estimation, and you won't get exact numbers anyway. Call it about 400-500 cals.

Any breaks were under a minute long as my husband moved the chips closer to my end of the truck. It was smooth and steady , not rushing, just constantly moving. Felt like a solid workout with dripping sweat. Of course it's a sunny 82 degrees with no breeze and 50% humidity.

Thanks for the reply. I have never done a "circuit." Can I assume it means pretty constant movement over a period of time with a good heart rate?

Yes. Circuit training is just that. Constant movement from one activity to another, usually involving resistance, i.e. weights. So your wheelbarrow time and your shoveling time would be considered resistance training/type activity. Like I said, it's all an estimation here - or anywhere. People are going to tell you to use a Heart Rate Monitor (HRM). Not really necessary, nor helpful in this case, since you wer not doing aerobic activity where your heartrate would be in the aerobic zone for an extended period.

Don't get in to the mindset of trying to account for every single exercise calorie. It just isn't possible, even with a HRM. You'll make yourself crazy trying to do that. Figure an hour at 400-500 if you are really working hard the whole time. As you become more fit, that number will go down to 300 or so.