1. INTRODUCTION

2. OBSERVATIONS AND SAMPLE
2.1. Band-6 Data Set and Flux Measurements
2.2. LBG samples
2.3. Estimates of the Stellar Mass for Individual Sources in our z=2-10 Sample

3. RESULTS
3.1. Expected Detections in the Far-IR Continuum
3.2. Continuum Detections of Individual Sources at 1.2 mm
3.3. Stacked constraints on the Infrared Excess
3.4. Sensitivity of Results to the Dust Temperature
3.5. Synthesis of the Present Results with Earlier z=5-6 Results from ALMA

4. DISCUSSION
4.1. Comparison with z~2 Spectroscopic Results
4.2. Prescription for the Average Infrared Excess in Star-forming Galaxies at z≳3

5. IMPLICATIONS OF THESE RESULTS
5.1. Inferred Dust Corrections for z≳3 Samples
5.2. Implied Star Formation Rate Densities at z≥3
5.3. Implications for the Lyman Continuum Photon Production Efficiencies

6. SUMMARY